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BS 970:1955 EN48A Steel: Specifications & Listings

BS 970:1955 EN48A: EN48A: Silicon-chromium spring steel. Specified in BS 970:1955, Part 2.

Category: Spring Steel
Grade Details
GradeBS 970:1955 EN48A
Standard BS 970:1955
ApplicationsBars for oil hardening and tempering. Laminated spring plates to this specification shall conform to the dimensional requirements in Appendix C.
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
BS 970 EN47 BS 970:1955 Related Material
BS 970 EN48 BS 970:1955 Related Material
JIS G4801 SUP9 JIS G 4801:2005 Related Material
JIS G4801 SUP10 JIS G 4801:2005 Related Material
EN 10089 55Cr3 EN 10089:2002 Related Material
JIS G4801 SUP9A JIS G 4801:2005 Related Material
GB/T 1222 55CrMnA GB/T 1222-2016 Related Material
IS 5517 55Cr3 IS 5517:1993 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 Cr S P
0.50-0.60 1.35-1.65 0.60-0.90 0.55-0.85 <=0.050 <=0.050

More data from BS 970:1955

From the standard
Status in the 1955 edition
Status
Deleted by Amendment 10
Reason
Amendment 10 (Jun 1972): spring steels moved to BS 970 Part 5:1972
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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