What is the difference between A516 and A537?
ASTM A516: Carbon steel plates for moderate and lower-temperature pressure vessel applications. Typically supplied in the as-rolled or normalized condition.
ASTM A537: Heat-treated (normalized or quenched and tempered) low-alloy steel plates for higher strength and improved toughness, often used in low-temperature or high-stress environments.
What is ASTM A537 specification?
ASTM A537 covers heat-treated (normalized, normalized and tempered, or quenched and tempered) low-alloy steel plates for pressure vessels. It provides enhanced notch toughness and higher strength compared to carbon steels like A516. Common applications include storage tanks and structural components in low-temperature service. Classes include Class 1 (normalized) and Class 2 (quenched and tempered).
What is the equivalent of ASTM A537 Class 1?
The closest international equivalents to ASTM A537 Class 1 are:
EN 10028-3: P355GH (similar strength and heat treatment).
JIS G3115: SPV 490 (approximate match for normalized low-alloy steel).
What is ASTM A516 grade 60 equivalent to?
ASTM A516 Grade 60 is comparable to:
EN 10028-2: P275GH (for elevated temperature service).
JIS G3115: SPV 355 (similar carbon steel for pressure vessels).
What is the difference between Grade 70 and Grade 60 A516?
Strength: Grade 70 has higher yield (260 MPa min) and tensile strength (485-620 MPa) vs. Grade 60 (230 MPa yield, 415-550 MPa tensile).
Applications: Grade 70 is used for higher-pressure or thicker components, while Grade 60 suits moderate conditions.
Chemistry: Grade 70 may have slightly higher carbon/manganese content for enhanced strength.
