Boiler & Pressure Vessel Steel Plate Supplier

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Material & processing

Specify dimensions and tolerances. Include the grade or describe your intended use if it is not yet selected.

Quantity & timing

Share your required tonnage and delivery date. Ask for stock availability, minimum order quantity and the dispatch schedule for your exact specification.

Packing & documents

Include destination, handling limits and required inspection documents so they can be reviewed with the material quotation.

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Product details

Boiler and pressure vessel steel plate enquiries need the complete material specification, including grade or class, thickness and delivery condition. This page groups reference tables for ASTM pressure-vessel plate specifications such as A516 and A387. Match each table to the ordered designation and its test conditions, then provide the fabrication drawing, required material documents and project inspection scope. Material selection remains subject to the applicable project requirements.

Boiler & pressure vessel steel plate for boilers, pressure vessels and process equipment made to the specified design code. Select the grade, dimensions, finish and inspection requirements for your order.

Grade selection

Select the exact grade and purchasing standard from the tables below.

Delivery condition

Specify surface finish, heat treatment and dimensional tolerances.

Inspection & supply

Agree test documentation, packing and shipment requirements.

Typical application

Boilers, pressure vessels and process equipment made to the specified design code.

Explore applications

Product specifications

Product specifications for Boiler & pressure vessel steel plate
Product form	Plate
Grade / standard	ASTM A516, A285, A387, A515, A537 and additional specifications
Width	100–3,000 mm reference supply range
Manufacturing process	Hot rolled; final heat treatment according to the selected grade
Cut length	1–12 m or cut to order
Delivery condition	As rolled, normalized or quenched and tempered only as permitted by the selected grade
Thickness	To the selected grade and plate specification
Dimensional tolerances	To the ordered product standard and agreed drawing
Inspection	Material identification, dimensions, surface and specified test report
Packaging	Protective wrapping, edge protection and steel strapping as agreed

Dimensions and finishes depend on the selected grade and processing route; not every size and finish combination is available. The technical tables describe the stated grades and test conditions. Your quotation should identify the exact supply specification and applicable standard.

Grade-specific technical data

Select the exact grade to view its composition, mechanical properties and test conditions. Grades and standards are not interchangeable; confirm the ordered edition and delivery condition. These reference tables are not a live stock list.

A202

A202 — chemical composition (%)

A202	Chemical Element Content(Upper Limit%)
A202	C	Si	Mn	P	S	Cr
GradeA	0.17	0.54-0.96	0.97-1.52	0.035	0.035	0.31-0.64
GradeB	0.25	0.54-0.96	0.97-1.52	0.035	0.035	0.31-0.64

Grade-specific supplier reference. Preserve the stated thickness and heat/product-analysis basis; ranges are not interchangeable with a single maximum. Confirm the ordered standard edition and material certificate.

Mechanical properties — supplier grade table

A202	Tensile Strengthksi [MPa]	Yield Strength ksi [MPa]	Elongation Gauge length 8in.[200mm],%	Elongation Gauge length 2in.[50mm],%
GradeA	75-95 [515-655]	45 [310]	≧ 16	≧ 19
GradeB	85-110 [585-760]	47 [325]	≧ 15	≧ 18

Product-matched supplier reference. Heat treatment, thickness and test orientation must match the purchase specification.

A202 — physical properties

Physical Performance	Metric	Imperial
Density	7.80g/cc	0.282 lb/in³

Typical reference density, not a guaranteed mechanical acceptance value.

A203

A203 — chemical composition (%)

A203	Upper limit of Chemical Element Content(%)
A203	C	Si	Mn	P	S	Ni
Class A	0.23	0.13-0.45	0.88	0.025	0.025	2.03-2.57
Class B	0.25	0.13-0.45	0.88	0.025	0.025	2.03-2.57
Class D	0.20	0.13-0.45	0.88	0.025	0.025	3.18-3.82
Class E	0.23	0.13-0.45	0.88	0.025	0.025	3.18-3.82
Class F	0.23	0.13-0.45	0.88	0.025	0.025	3.18-3.82

Grade-specific supplier reference. Preserve the stated thickness and heat/product-analysis basis; ranges are not interchangeable with a single maximum. Confirm the ordered standard edition and material certificate.

Mechanical properties — supplier grade table

A202	Tensile Strengthksi [MPa]	Yield Strength ksi [MPa]	Elongation Gauge length 8in.[200mm],%	Elongation Gauge length 2in.[50mm],%
GradeA	65-85 [450-585]	37 [255]	19	23
GradeB	70-90 [485-620]	40 [275]	17	21
GradeD	65-85 [450-585]	37 [255]	19	23
GradeE	70-90 [485-620]	40 [275]	17	21
GradeF	75-100 [515-690]	50 [345]	-	20

Product-matched supplier reference. Heat treatment, thickness and test orientation must match the purchase specification.

A203 — physical properties

Physical Performance	Metric	Imperial
Density	7.80g/cc	0.282 lb/in³

Typical reference density, not a guaranteed mechanical acceptance value.

A204

A204 — chemical composition (%)

A204	Upper limit of Chemical Element Content (%)
A204	C	Si	Mn	P	S	Mo
Class A	0.18-0.25	0.13-0.45	0.90-0.98	0.035	0.035	0.45-0.60
Class B	0.20-0.27	0.13-0.45	0.90-0.98	0.035	0.035	0.45-0.60
Class C	0.23-0.28	0.13-0.45	0.90-0.98	0.035	0.035	0.45-0.60

Grade-specific supplier reference. Preserve the stated thickness and heat/product-analysis basis; ranges are not interchangeable with a single maximum. Confirm the ordered standard edition and material certificate.

Mechanical properties — supplier grade table

A204	Tensile Strength ksi [MPa]	Yield Strength ksi [MPa]	Elongation Gauge length 8in.[200mm],%	Elongation Gauge length 2in.[50mm],%
GradeA	70-90 [485-620]	37 [255]	19	23
GradeB	75-95 [515-655]	40 [275]	17	21
GradeC	75-95 [515-655]	43 [295]	16	20

Product-matched supplier reference. Heat treatment, thickness and test orientation must match the purchase specification.

A204 — physical properties

Physical Performance	Metric	Imperial
Density	7.80g/cc	0.282 lb/in³

Typical reference density, not a guaranteed mechanical acceptance value.

A285

A285 — chemical composition (%)

A285	C	Mn	P	S
Class A	0.17	0.98	0.025	0.025
Class B	0.22	0.98	0.025	0.025
Class C	0.28	0.98	0.025	0.025

Grade-specific supplier reference. Preserve the stated thickness and heat/product-analysis basis; ranges are not interchangeable with a single maximum. Confirm the ordered standard edition and material certificate.

Mechanical properties — supplier grade table

A285	Thickness mm	Yield Mpa	Tensile Strength Mpa	Elongation(%)
Class A	6-50	165	310-450	30%
Class A	50-200	165	310-450	27%
Class B	6-50	185	345-485	28%
Class B	50-200	185	345-485	25%
Class C	6-50	205	380-515	27%
Class C	50-200	205	380-515	23%

Product-matched supplier reference. Heat treatment, thickness and test orientation must match the purchase specification.

A285 — physical properties

Physical Performance	Metric	Imperial
Density	7.80g/cc	0.282 lb/in³

Typical reference density, not a guaranteed mechanical acceptance value.

A387

A387 — chemical composition (%)

A387	UNS	C	Mn	P	S	Si	Cr	Mo
Level 5	S50200	≤ 0.15	0.25-0.66	0.025	0.025	≤ 0.55	3.90-6.10	0.40-0.70
Level 9	K90941	≤ 0.15	0.25-0.66	0.025	0.025	≤ 1.05	7.90-10.10	0.85-1.15
Level 11	K11789	0.04-0.17	0.35-0.73	0.025	0.025	0.44-0.86	0.94-1.56	0.40-0.70
Level 12	K11757	0.04-0.17	0.35-0.73	0.025	0.025	0.13-0.45	0.74-1.21	0.40-0.65
Level 22	K21590	0.04-0.15	0.25-0.66	0.025	0.025	≤ 0.50	1.88-2.62	0.85-1.15
Class 22L	K21590	≤ 0.12	0.25-0.66	0.025	0.025	≤ 0.50	1.88-2.62	0.85-1.15
Class 91	K90901	0.06-0.15	0.25-0.66	0.025	0.012	0.18-0.56	7.90-9.60	0.80-1.10

Grade-specific supplier reference. Preserve the stated thickness and heat/product-analysis basis; ranges are not interchangeable with a single maximum. Confirm the ordered standard edition and material certificate.

Mechanical properties — supplier grade table

A387	Category	Tensile Strength Mpa	Yield Strength Mpa	Elongation Gauge length 2in.[50mm]%
Level 5	Section Category 1	415-585	205	18
Level 5	Section Category 2	515-690	310	18
Level 9	Section Category 1	415-585	205	18
Level 9	Section Category 2	515-690	310	18
Level 11	Section Category 1	415-585	240	22
Level 11	Section Category 2	485-620	310	22
Level 12	Section Category 1	380-550	230	22
Level 12	Section Category 2	450-585	275	22
Level 22	Section Category 1	415-585	205	18
Level 22	Section Category 2	515-690	310	18

Product-matched supplier reference. Heat treatment, thickness and test orientation must match the purchase specification.

A387 — physical properties

Property	Metric
Density	7.7–8.03 g/cm³

Typical range varies with chromium–molybdenum grade. The source’s duplicate metric value under its imperial heading is omitted.

A516

A516 — chemical composition (%)

A516	C Thickness (mm)				Mn Thickness (mm)		Si	P	S
A516	6-12.5mm	12.5-25mm	25-50mm	>50mm	≤ 12.5mm	>12.5mm	Si	P	S
Level 55	0.18	0.20	0.22	0.25	0.55~0.98	0.60~1.30	0.13~0.45	0.035	0.035
Level 60	0.21	0.23	0.23	0.25	0.6~0.9	0.80~1.20	0.13~0.45	0.035	0.035
Level 65	0.24	0.26	0.26	0.28	0.85~1.20	0.85~1.20	0.13~0.45	0.035	0.035
Level 70	0.27	0.28	0.28	0.3	0.85~1.20	0.85~1.20	0.13~0.45	0.035	0.035

Grade-specific supplier reference. Preserve the stated thickness and heat/product-analysis basis; ranges are not interchangeable with a single maximum. Confirm the ordered standard edition and material certificate.

Mechanical properties — supplier grade table

ASTM A516	Tensile Strength	Yield	Lower limit of Elongation(%)
ASTM A516	(MPa)	(MPa)	Gauge Length 50mm	Gauge Length 200mm
Level 55	380~515	205	27	23
Level 60	415~550	220	25	21
Level 65	450~585	240	23	19
Level 70	485~620	260	21	17

Product-matched supplier reference. Heat treatment, thickness and test orientation must match the purchase specification.

A516 — physical properties

Physical Performance	Metric	Imperial
Density	7.80g/cc	0.282 lb/in³

Typical reference density, not a guaranteed mechanical acceptance value.

A533

A533 — chemical composition (%)

A533		Class A	Class B	Class C	Class D	Class E
C		0.25	0.25	0.25	0.25	0.20
Mn	Smelting Analysis	1.15-1.50	1.15-1.50	1.15-1.50	1.15-1.50	1.15-1.70
Mn	Finished Product Analysis	1.07-1.62	1.07-1.62	1.07-1.62	1.07-1.62	1.04-1.84
P		0.025	0.025	0.025	0.025	0.020
S		0.025	0.025	0.025	0.025	0.015
Si	Smelting Analysis	0.15-0.40	0.15-0.40	0.15-0.40	0.15-0.40	0.15-0.40
Si	Finished Product Analysis	0.13-0.45	0.13-0.45	0.13-0.45	0.13-0.45	0.13-0.45
Mo	Smelting Analysis	0.45-0.60	0.45-0.60	0.45-0.60	0.45-0.60	0.25-0.60
Mo	Finished Product Analysis	0.41-0.64	0.41-0.64	0.41-0.64	0.41-0.64	0.21-0.64
Ni	Smelting Analysis	-	0.40-0.70	0.70-1.00	0.20-0.40	0.60-1.00
Ni	Finished Product Analysis	-	0.37-0.73	0.67-1.03	0.17-0.43	0.57-1.03
Cr	Smelting Analysis	-	-	-	-	0.60
Cr	Finished Product Analysis	-	-	-	-	0.64

Grade-specific supplier reference. Preserve the stated thickness and heat/product-analysis basis; ranges are not interchangeable with a single maximum. Confirm the ordered standard edition and material certificate.

Mechanical properties — supplier grade table

A533	Tensile Strength Ksi(MPa)	Yield Strength Ksi(MPa)	Elongation Gauge Length 2in.[50mm],%
Grade1	80-100[550-690]	50[345]	18
Grade2	90-115[620-795]	70[485]	16
Grade3	100-125[690-860]	83[570]	16

Product-matched supplier reference. Heat treatment, thickness and test orientation must match the purchase specification.

A533 — physical properties

Physical Performance	Metric	Imperial
Density	7.7-8.03 g/cm3	0.278-0.290 lb/in3

Typical reference density, not a guaranteed mechanical acceptance value.

A537

A537 — chemical composition (%)

Standard	Thickness(Mm)	C	Si	Mn	P	S	Cu	Ni	Cr	Mo
A537	≤ 40mm	0.24	0.15-0.50	0.70-1.35	0.035	0.035	0.35	0.25	0.25	0.08
A537	>40mm	0.24	0.15-0.50	1.00-1.60	0.035	0.035	0.35	0.25	0.25	0.08

Grade-specific supplier reference. Preserve the stated thickness and heat/product-analysis basis; ranges are not interchangeable with a single maximum. Confirm the ordered standard edition and material certificate.

Mechanical properties — supplier grade table

A537	Thickness mm	Yield Mpa	Tensile Strength Mpa	Elongation %
Level 1	≤ 65	345	485-620	22
	65-100	310	450-585	-
	100-150	-	-	18
Level 2	≤ 65	415	550-690	22
	65-100	380	515-655	20
	100-150	315	485-620	-
Level 3	≤ 65	380	550-690	22
	66-100	345	515-655	20
	101-150	275	485-620	-

Product-matched supplier reference. Heat treatment, thickness and test orientation must match the purchase specification.

A537 — physical properties

Physical Performance	Metric	Imperial
Density	7.80g/cc	0.282 lb/in³

Typical reference density, not a guaranteed mechanical acceptance value.

ASTM A515 grades 60 / 65 / 70

A515 — carbon maximum by plate thickness

Thickness (mm)	Grade 60 / 415 C max. %	Grade 65 / 450 C max. %	Grade 70 / 485 C max. %
≤25	.24	.28	.31
>25–50	.27	.31	.33
>50–100	.29	.33	.35
>100–200	.31	.33	.35
>200	.31	.33	.35

ASTM A515/A515M-17 (2022); heat and product analysis.

A515 — remaining chemical requirements

Element / analysis	Grade 60	Grade 65	Grade 70
Mn max., heat	0.90	0.90	1.20
Mn max., product	0.98	0.98	1.30
P max.	0.025	0.025	0.025
S max.	0.025	0.025	0.025
Si, heat	0.15–0.40	0.15–0.40	0.15–0.40
Si, product	0.13–0.45	0.13–0.45	0.13–0.45

Mass %. For each 0.01 percentage-point carbon reduction below maximum, Mn may increase by 0.06, up to 1.50% heat / 1.60% product analysis. These limits use the 2022 reaffirmed edition, not older supplier tables.

A515 — tensile requirements

Grade	Yield min. (MPa)	Tensile (MPa)	A200 min. (%)	A50 min. (%)
60 / 415	220	415–550	21	25
65 / 450	240	450–585	19	23
70 / 485	260	485–620	17	21

Elongation adjustments follow ASTM A20/A20M.

A515 — heat treatment and inspection

Parameter	Requirement
Thickness ≤50 mm	Normally as rolled; normalized and/or stress relieved when ordered
Thickness >50 mm	Normalized
Steelmaking	Killed steel, coarse austenitic grain practice
General plate requirements	ASTM A20/A20M
Coil-derived plate	Qualification applies only after processing into finished plate and the required tests
Ultrasonic examination	ASTM A435 / A577 / A578 when the applicable supplementary requirement is ordered

A515 is for intermediate/higher-temperature pressure-vessel plate. Do not assign a universal low-temperature impact guarantee.

Surface & processing requirements

Include the downstream process in your enquiry so that the material, dimensions and surface can be reviewed together.

Cut-to-size requirements	Final length and width, cutting method and edge condition.
Forming / fabrication	Describe the downstream forming, pressing, profiling or fabrication operation.
Finishing requirements	State whether material will be painted, coated or otherwise finished after delivery.
Plate / sheet handling	Confirm lifting method, stack height and protection of edges and surfaces.

Production & processing

Define the material and the downstream process together. Cutting, slitting or finishing requirements should form part of the order specification.

Material review

Grade, dimensions and surface requirements are checked against the enquiry.

Processing scope

Agree cutting, slitting or forming requirements and the finished product tolerances.

Order inspection

Define acceptance criteria, identification and the requested documentation.

Rolling, processing and production facilities

Explore manufacturing

Stock & warehouse

Warehouse photographs illustrate storage and handling. For a current stock check, send the grade, dimensions and tonnage; ask for the available quantity and order-specific material photographs before purchase.

Plate and sheet stock in covered storage

Quality inspection & documentation

Agree the acceptance criteria and required documents before confirming your order.

Material identificationGrade, standard and requested test documentation.
Dimensions & surfaceThickness, width, finish and agreed tolerances.
Order documentsProduct identification, packing list and inspection scope.

Quality requirements

Packaging & shipment

Tell us how the material will be transported, unloaded and stored. Specify moisture protection, edge protection, package weight and destination with your enquiry.

Protective packing, loading and export shipment

Protection	Moisture barrier, edge protection and surface protection as agreed.
Unit weight	Specify the coil or bundle weight for your unloading equipment.
Identification	Product, grade, dimensions and order reference on the agreed packing list.
Delivery	Confirm destination, transport method and delivery terms in the quotation.

Material test reports & order documents

Use the document types below to define your quality requirements. Ask Alex or Anna which documents apply to the selected material; document type and inspection scope should be agreed before order confirmation.

Material test report	Heat or coil number, ordered grade, chemical composition and mechanical test results.
Inspection document	Specify the required EN 10204 document type and inspection scope in the enquiry.
Conformity documents	Request an original copy showing the issuing body, holder, number, applicable scope and validity.

Discuss required documents

Frequently asked questions

What information is needed for an ASTM A516 plate RFQ?

State the standard and edition, grade, thickness, plate width and length, quantity and delivery condition. Include any specified impact testing, ultrasonic examination, inspection-document type and material traceability requirements. Confirm the full inspection and processing scope before ordering.

Why must the grade or class be stated for pressure vessel plate?

A standard number alone may cover several grades or classes with different requirements. Keep the complete designation from the project specification and match the chemistry, strength, heat treatment and test conditions to that designation.

Which documents should be requested for pressure vessel plate?

Identify the required inspection document and any project-specific certificates at the enquiry stage. Agree heat-number traceability, material test results and additional test reports so the supplied documents can be matched to the ordered plates and specification.

How are minimum order and lead time confirmed?

Send your grade, size, tonnage and required delivery date. Ask for separate confirmation of stock availability, any production or processing time, and the dispatch date. Transit time depends on destination and shipment terms; the agreed quotation should state the minimum quantity and schedule.

What documents should I request?

List the required material test report, inspection document type and any third-party inspection in your enquiry. Ask which documents apply to your selected material and agree their scope before ordering. A general company certificate does not replace the material test results for the supplied heat or coil.

Related products

Boiler & pressure vessel steel plate

Alex

Anna

Plan your order

Material & processing

Quantity & timing

Packing & documents

Product details

Related

Grade selection

Delivery condition

Inspection & supply

Boilers, pressure vessels and process equipment made to the specified design code.

Product specifications

Grade-specific technical data

A202 — chemical composition (%)

Mechanical properties — supplier grade table

A202 — physical properties

A203 — chemical composition (%)

Mechanical properties — supplier grade table

A203 — physical properties

A204 — chemical composition (%)

Mechanical properties — supplier grade table

A204 — physical properties

A285 — chemical composition (%)

Mechanical properties — supplier grade table

A285 — physical properties

A387 — chemical composition (%)

Mechanical properties — supplier grade table

A387 — physical properties

A516 — chemical composition (%)

Mechanical properties — supplier grade table

A516 — physical properties

A533 — chemical composition (%)

Mechanical properties — supplier grade table

A533 — physical properties

A537 — chemical composition (%)

Mechanical properties — supplier grade table

A537 — physical properties

A515 — carbon maximum by plate thickness

A515 — remaining chemical requirements

A515 — tensile requirements

A515 — heat treatment and inspection

Surface & processing requirements

Production & processing

Material review

Processing scope

Order inspection

Stock & warehouse

Quality inspection & documentation

Packaging & shipment

Material test reports & order documents

Frequently asked questions

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