astm a573 gr 70 equivalent carbon steel iron plate cold brittleness

With high-quality astm a573 gr 70 equivalent carbon steel iron plate steel and professional services, we have won international praise in infrastructure, shipbuilding, oil and other industries, and gradually grow into a bright star in the steel export industry, while winning unanimous praise from foreign customers. It has laid a foundation for the development of our astm a573 gr 70 equivalent carbon steel iron plate steel market and improved the control of steel plate production quality.

40Cr steel plate is one of the most widely used steel in machinery manufacturing. After tempering, it has good comprehensive mechanical properties, good low temperature impact toughness and low notch sensitivity. The hardenability of steel astm a573 gr 70 equivalent carbon steel iron plate is good. It can be hardened to Ф28 ～ 60mm during water quenching and Ф15～40mm during oil quenching. When the hardness is HB174～229, the relative cutting workability is 60%. The steel is suitable for making medium-sized plastic molds.

A283 Grade B steel plate chemical composition:
Carbon, max %: 0.17, Manganese, max %:0.90 , Silicon, max%: 0.15-0.40, Phosphorus max%: 0.035, Sulfur max %: 0.040,Copper min %: 0.20
A283 Grade B steel plate mechanical property
Tensile strength, kis [MPa]:50-56[345-450]
Yield strength, min, kis [MPa]: 27[185]
Elongation in 8 in. [200 mm], min, %:25
Elongation in 2 in. [50 mm], min, %: 28

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