What is ASTM A204 GR B material?

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What is ASTM A204 GR B material?

2026-01-05

What is ASTM A204 GR B material?

ASTM A204 Grade B is used in fabricators serving industry, especially in the oil, gas and chemical supply markets. ASTM A204 specification covers molybdenum alloy steel plates, intended particularly for welded boilers and other pressure vessels.

What is A204 steel equivalent to?

ASTM A204, a pressure vessel plate standard, has several equivalent grades in other standards. ASTM A204 equivalent steel grades include: EN 16Mo3, 15Mo3, DIN 17155, and JIS G3103.

A204 Grade B Chemical Composition

A204 Grade B Chemical Composition
Grade	The Element Max (%)
Grade	C	Si	Mn	P	S
A204 Grade B	0.20-0.27	0.13-0.45	0.90-0.98	0.035	0.035

Carbon Equivalent: Ceq = 【C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15】%

ASTM A204 Mechanical Property:

Mechanical Property of ASTM A204 steel plate	Grade A	Grade B	Grade C
Tensile strength, kis [MPa]	65-85 [450-585]	70-90 [485-620]	75-95 [515-655]
Yield strength, min, kis [MPa]	37 [255]	40 [275]	43 [295]
Elongation in 8 in. [200 mm], min, %	19	17	16
Elongation in 2 in. [50 mm], min, %	23	21	20

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The main grades of pressure vessel and boiler steel are

Standard	Steel Grade
ASTM A202/A202M	A202 Grade A	A202 Grade B
ASTM A203/A203M	A203 Grade A	A203 Grade B	A203 Grade D	A203 Grade E
ASTM A203/A203M	A203 Grade F
ASTM A204/A204M	A204 Grade A	A204 Grade B	A204 Grade C
ASTM A285/A285M	A285 Grade A	A285 Grade B	A285 Grade C
ASTM A299/A299M	A299 Grade A	A299 Grade B
ASTM A302/A302M	A302 Grade A	A302 Grade B	A302 Grade C	A302 Grade D
ASTM A387/A387M	A387 Grade 11 Class 1	A387 Grade 11 Class 2	A387 Grade 12 Class1	A387 Grade 12 Class 2
ASTM A387/A387M	A387 Grade 22 Class 1	A387 Grade 22 Class 2	A387 Grade 5 Class 1	A387 Grade 5 Class 2
ASTM A515/A515M	A515 Grade 60	A515 Grade 65	A515 Grade 70
ASTM A516/A516M	A516 Grade 55	A516 Grade 60	A516 Grade 65	A516 Grade 70
ASTM A517/A517M	A517 Grade A	A517 Grade B	A517 Grade E	A517 Grade F
ASTM A517/A517M	A517 Grade H	A517 Grade P	A517 Grade Q	A517 Grade S
ASTM A533/A533M	A533 Grade A	A533 Grade B	A533 Grade C	A533 Grade D
ASTM A537A537M	A537 Class 1	A537 Class 2	A537 Class 3
ASTM A612/A612M	ASTM A612M
ASTM A662/A662M	A662 Grade A	A662 Grade B	A662 Grade C
ASTM A841/A841M	A841 Grade A	A841 Grade B	A841 Grade C	A841 Grade D
ASTM A841/A841M	A841 Grade E	A841 Grade F
EN10028-2	P235GH	P265GH	P295GH	P355GH
EN10028-2	16Mo3
EN10028-3	P275NH	P275NL1	P275NL2	P355N
	P355NH	P355NL1	P355NL2	P460NH
	P460NL1	P460NL2	P275N	P460N
EN10028-5	P355M	P355ML1	P355ML2	P420M
	P420ML1	P420ML2	P460M	P460ML1
	P460ML2
EN10028-6	P355Q	P355QH	P355QL1	P355QL2
	P460Q	P460QH	P460QL1	P460QL2
	P500Q	P500QH	P500QL1	P500QL2
	P690Q	P690QH	P690QL1	P690QL2
JIS G3115	SPV235	SPV315	SPV355	SPV410
JIS G3115	SPV450	SPV490
JIS G3103	SB410	SB450	SB480	SB450M
JIS G3103	SB480M
GB713	Q245R	Q345R	Q370R	18MnMoNbR
	15CrMoR	14Cr1MoR	13MnNiMoR	12Cr2Mo1R
	12Cr1MoVR
GB3531	16MnDR	15MnNiDR	09MnNiDR
DIN 17155	HI	HII	17Mn4	19Mn6
DIN 17155	15Mo3	13CrMo44	10CrMo910

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What is ASTM A204 GR B material?

What is A204 steel equivalent to?

A204 Grade B Chemical Composition

ASTM A204 Mechanical Property: