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BS 970 EN48A vs IS 3431 50Cr4V2

Related Material — 68.9% match based on chemical composition and mechanical property overlap.

BS 970 EN48A (BS 970:1955) and IS 3431 50Cr4V2 (IS 3431:1982) are both steel grades. Both fall under the Spring Steel category. BS 970 EN48A is typically used for bars for oil hardening and tempering. laminated spring plates to this specification shall conform to the dimensional requirements in appendix c., while IS 3431 50Cr4V2 is commonly used for valve springs,high performance automotive springs,aerospace springs,coil springs,torsion bars. BS 970 EN48A is defined under British Standards (BS), originating from United Kingdom, while IS 3431 50Cr4V2 is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, BS 970 EN48A vs IS 3431 50Cr4V2 is a 68.9% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a related material overall at 68.9%.

Frequently Compared With BS 970 EN48A:
IS 5517 55Cr3 EN 10089 55Cr3 EN 10083-3 51CrV4 GB/T 1222 55CrMnA IS 3195 113C6 IS 3195 50Cr4V2 EN 10089 50CrV4 EN 10083-1 51CrV4 EN 10083-1 51CrV4 IS 3195 52Cr4Mo2V IS 1570 (Part 4) 55Si7 IS 4367 55Si7
Match Breakdown
CHEMISTRY MATCH
68.9%
MECHANICAL MATCH
No shared data
OVERALL
68.9%
Specifications
Property BS 970 EN48A IS 3431 50Cr4V2
Standard BS 970:1955 IS 3431:1982
Category Spring Steel Spring Steel
C (%) 0.50-0.60 0.45-0.55
Si (%) 1.35-1.65 0.15-0.35
Mn (%) 0.60-0.90 0.50-0.80
Cr (%) 0.55-0.85 0.90-1.20
S (%) <=0.050 <=0.045
P (%) <=0.050 <=0.045
V (%) Not specified 0.15-0.30
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property BS 970 EN48A IS 3431 50Cr4V2
Core Hardness After Quenching Not specified >=54 HRC (oil, up to 25 mm round / 16 mm flat)
Elongation (quenched and tempered) Not specified >=6%
Hardness, soft annealed Not specified <=245 HB
Hardness, untreated (hot rolled) Not specified above 310 HB (reference value)
Tensile Strength (quenched and tempered) Not specified 1370-1620 MPa
Yield Stress (quenched and tempered) Not specified >=1180 MPa
Typical Applications
BS 970 EN48A
Bars for oil hardening and tempering. Laminated spring plates to this specification shall conform to the dimensional requirements in Appendix C.
IS 3431 50Cr4V2
valve springs,high performance automotive springs,aerospace springs,coil springs,torsion bars
Key Differences
Can BS 970 EN48A Be Substituted With IS 3431 50Cr4V2?
BS 970 EN48A and IS 3431 50Cr4V2 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.
Forms & Sizes Available on M-EX
BS 970 EN48A
No active listings currently.
IS 3431 50Cr4V2
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 6700–7000 mm (263.78–275.59 in)
On M-EX Right Now
BS 970 EN48A
0 active listings and RFQs →
IS 3431 50Cr4V2
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 970 EN48A and IS 3431 50Cr4V2?
IS 3431 50Cr4V2 specifies V which is not specified for BS 970 EN48A.
Can BS 970 EN48A be substituted with IS 3431 50Cr4V2?
BS 970 EN48A and IS 3431 50Cr4V2 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.