Standard Specification 8620 Alloy Plate Equivalent Grade Comparison - China

The following is a comparison of equivalent grades of 8620 alloy plate under different standards and specifications:

USA-ASTM A29/A29M 8620-conventional alloy structural steel.

ASTM A304 8620H-alloy steel with guaranteed hardenability.

China-GB/T 3077-2015 20CrNiMo-national standard equivalent grade, chemical composition and performance are similar to 8620 - Germany-DIN 1654 1.6523/21NiCrMo-German standard equivalent grade.

Europe-EN 1.6523/20NiCrMo2-2-Europe an standard equivalent grade.

UK-BS 970 805M20-British standard equivalent grade.

Japan-JIS G 4103 SNCM220-Japanese standard equivalent grade.

### Description

The main difference between 8620 and 8620H is whether the hardenability is guaranteed.

The grade with H (such as 8620H) indicates that the hardenability is guaranteed.

Chemical composition and performance: Equivalent grades under different standards are basically similar in chemical composition and mechanical properties, but there may be slight differences in specific indicators, such as the control of sulfur and phosphorus content.

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