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IS 3431 50Cr4V2 vs BS 970 EN48

Close Alternative — 84.7% match based on chemical composition and mechanical property overlap.

IS 3431 50Cr4V2 (IS 3431:1982) and BS 970 EN48 (BS 970:1955) are both steel grades. Both fall under the Spring Steel category. IS 3431 50Cr4V2 is typically used for valve springs,high performance automotive springs,aerospace springs,coil springs,torsion bars, while BS 970 EN48 is commonly used for high duty springs, valve springs. IS 3431 50Cr4V2 is defined under Bureau of Indian Standards (IS), originating from India, while BS 970 EN48 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, IS 3431 50Cr4V2 vs BS 970 EN48 is a 84.7% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a close alternative overall at 84.7%.

Frequently Compared With IS 3431 50Cr4V2:
EN 10089 50CrV4 EN 10083-3 51CrV4 IS 3431 60Cr4V2 IS 3195 50Cr4V2 IS 3195 55Si7 IS 3195 60Cr4V2 EN 10083-1 51CrV4 IS 3195 113C6 IS 3431 60Si7 IS 3195 52Cr4Mo2V IS 3431 55Si7 EN 10083-1 51CrV4
Match Breakdown
CHEMISTRY MATCH
84.7%
MECHANICAL MATCH
No shared data
OVERALL
84.7%
Specifications
Property IS 3431 50Cr4V2 BS 970 EN48
Standard IS 3431:1982 BS 970:1955
Category Spring Steel Spring Steel
C (%) 0.45-0.55 0.45-0.55
Cr (%) 0.90-1.20 1.00-1.40
Mn (%) 0.50-0.80 0.50-0.80
P (%) <=0.045 <=0.050
S (%) <=0.045 <=0.050
Si (%) 0.15-0.35 0.10-0.50
V (%) 0.15-0.30 Not specified
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property IS 3431 50Cr4V2 BS 970 EN48
Core Hardness After Quenching >=54 HRC (oil, up to 25 mm round / 16 mm flat) Not specified
Elongation (quenched and tempered) >=6% Not specified
Hardness, soft annealed <=245 HB Not specified
Hardness, untreated (hot rolled) above 310 HB (reference value) Not specified
Tensile Strength (quenched and tempered) 1370-1620 MPa Not specified
Yield Stress (quenched and tempered) >=1180 MPa Not specified
Typical Applications
IS 3431 50Cr4V2
valve springs,high performance automotive springs,aerospace springs,coil springs,torsion bars
BS 970 EN48
High duty springs, valve springs
Key Differences
Can IS 3431 50Cr4V2 Be Substituted With BS 970 EN48?
IS 3431 50Cr4V2 and BS 970 EN48 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.
Forms & Sizes Available on M-EX
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)
BS 970 EN48
Flat Bar → (3 listings)
Thickness: 30–30 mm (1.18–1.18 in)
Width: 150–150 mm (5.91–5.91 in)
Length: 2500–2800 mm (98.43–110.24 in)
On M-EX Right Now
IS 3431 50Cr4V2
2 active listings and RFQs →
BS 970 EN48
3 active listings and RFQs →
Frequently Asked Questions
What is the difference between IS 3431 50Cr4V2 and BS 970 EN48?
IS 3431 50Cr4V2 specifies V which is not specified for BS 970 EN48.
Can IS 3431 50Cr4V2 be substituted with BS 970 EN48?
IS 3431 50Cr4V2 and BS 970 EN48 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.