ASTM A204 Gr A steel technical data

ASTM A204 Gr A steel is also known as pressure vessel steel. ASTM A204 Gr A steel is widely used in power station, petroleum and chemical industry to make reactor, heat exchanger, separator, spherical tank, nuclear reactor pressure vessel, hydropower station, etc.

ASTM A204 Gr A steel chemical composition (%) :

Chemical elements	Type	Thickness(mm)	A
C ≤	Heat analyse Product analyse	≤25	0.18
		＞25~50	0.21
		＞50~100	0.23
		＞100	0.25
Mn ≤	Heat analyse	-	0.90
	Product analyse	-	0.98
P ≤ , S ≤	Heat analyse	-	0.035
	Product analyse	-	0.035
Si	Heat analyse	-	0.15~0.40
	Product analyse	-	0.13~0.45
Mo	Heat analyse	-	0.45~0.60
	Product analyse	-	0.41~0.64

ASTM A204 Gr A steel Mechanical Properties:

ASTM A204 Gr A	ASTM A204 Grade C
	Tensile strength, kis [MPa]:	65-85 [450-585]
	Yield strength, min, kis [MPa]:	37 [255]
	Elongation in 8 in. [200 mm], min, %	19
	Elongation in 2 in. [50 mm], min, %	23

ASTM A204 Gr A steel plate delivery condition: Hot rolled with the thickness less than 40mm. Or normalized or stress relief, normalized with stress relief. The ASTM A204 Gr A steel plate with thickness more than 40mm should delivery in normalized.

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