Pressure vessel steel plate -A517 Grade E

A517 Grade E is an ultra-high-strength low-alloy steel plate that complies with the ASTM A517 standard. It undergoes quenching and tempering heat treatment, achieving a yield strength of ≥1000 MPa while demonstrating excellent impact resistance.

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Product Description

1.What is the chemical composition of A517 Grade E steel?

A517 grade E Chemical Composition
Grade	The Element Max(%)
Grade	C	Si	Mn	P	S
A517 grade E	0.10-0.22	0.08-0.45	0.35-0.78	0.035	0.035
	Cr	Mo	B	Ti
	1.34-2.06	0.36-0.64	0.001-0.005	0.005-0.11

2.What are the key differences in core parameters between A517 Grade E and A517 Grade Q?

Property	A517 Grade E	A517 Grade Q
Standard Reference	ASTM A517 (Conventional Q&T Steel)	ASTM A517 (Cost-Optimized Grade)
Material Type	Ni-Cr-Mo Alloy Steel	Low-Carbon Microalloyed Steel
Heat Treatment	Quenched & Tempered (Q&T)	Thermo-Mechanical Controlled Processing (TMCP)
Tensile Strength	≥760 MPa (110 ksi)	≥690 MPa (100 ksi)
Yield Strength	≥690 MPa (100 ksi)	≥620 MPa (90 ksi)
Elongation	≥16%	≥18%
Key Alloying Elements	Ni 0.7-1.2%, Cr 0.4-0.8%, Mo 0.2-0.4%	Nb 0.02-0.05%, V 0.05-0.10%, Ti ≤0.02%
Impact Toughness	-40°C CVN≥54J	-20°C CVN≥34J
Welding Preheat Temp.	150-200°C	100-150°C
Max. Thickness	≤150mm	≤100mm
Relative Cost	Higher (30-40% more than Grade Q)	Lower

3.What are the typical applications of A517 Grade E?
• Ultra-high pressure vessels (nuclear/chemical industries)
• Structural components for heavy engineering machinery
• Wear-resistant parts for mining equipment
• Protective components for special equipment

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