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BS 970:1955 EN21A Steel: Specifications & Listings

BS 970:1955 EN21A: EN21A: 3 per cent nickel steel in the form of plate, sheet and strip (see BS 1449). Specified in BS 970:1955, Part 2.

Category: Alloy Steel
Grade Details
GradeBS 970:1955 EN21A
Standard BS 970:1955
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
SAE J404 50B46 SAE J404:2000 Related Material
BS 970 EN10 BS 970:1955 Related Material
BS 970 EN12 BS 970:1955 Related Material
BS 970 EN12A BS 970:1955 Related Material
BS 970 EN12B BS 970:1955 Related Material
BS 970 EN12C BS 970:1955 Related Material
BS 970 EN14B BS 970:1955 Related Material
IS 1570 (Part 7) 18C10H IS 1570 (Part 7):1992 Related Material
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Chemical Composition (%)
C Si Mn Ni S P
0.20-0.30 0.10-0.35 <=0.60 2.50-3.50 <=0.050 <=0.050

More data from BS 970:1955

From the standard
Status in the 1955 edition
Status
Deleted by Amendment 7
Reason
Amendment 7 (Sep 1970): direct hardening alloy steels moved to BS 970 Part 2:1970
BS 970:1955 was amended up to Amendment 10 (June 1972); steels were moved to the revised Parts 1 to 5 and deleted from this edition.
Source: BS 970:1955, Amendment slips 6 to 10

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