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EN 10083-3 51CrV4 vs IS 1570 (Part 4) 55Si7

Minimal Match — 35% match based on chemical composition and mechanical property overlap.

EN 10083-3 51CrV4 (EN 10083-3:2006) and IS 1570 (Part 4) 55Si7 (IS 1570 (Part 4):1988) are both steel grades. Both fall under the Spring Steel category. EN 10083-3 51CrV4 is defined under European Standard (EN), originating from Europe, while IS 1570 (Part 4) 55Si7 is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, EN 10083-3 51CrV4 vs IS 1570 (Part 4) 55Si7 is a 67.1% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With EN 10083-3 51CrV4:
EN 10089 50CrV4 EN 10089 55Si7 EN 10089 55Cr3 GB/T 1222 55CrMnA IS 3431 50Cr4V2 EN 10083-1 51CrV4 IS 5517 55Cr3 EN 10083-1 51CrV4 IS 3195 55Si7 IS 3431 60Cr4V2 IS 3195 60Cr4V2 IS 3195 52Cr4Mo2V
Match Breakdown
CHEMISTRY MATCH
67.1%
MECHANICAL MATCH
No shared data
OVERALL
35%
Specifications
Property EN 10083-3 51CrV4 IS 1570 (Part 4) 55Si7
Standard EN 10083-3:2006 IS 1570 (Part 4):1988
Category Spring Steel Spring Steel
C (%) 0.47-0.55 0.50-0.60
Cr (%) 0.90-1.20 Not specified
Mn (%) 0.70-1.10 0.80-1.00
P (%) <=0.025 Not specified
S (%) <=0.025 Not specified
Si (%) <=0.40 1.50-2.00
V (%) 0.10-0.25 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 EN 10083-3 51CrV4 IS 1570 (Part 4) 55Si7
Condition Quenched and tempered (+QT), ruling section d <= 16 mm Not specified
Elongation 9% min Not specified
Hardness Soft annealed (+A): 248 HBW max Not specified
Tensile Strength 1100 to 1300 MPa Not specified
Yield Strength 900 MPa min Not specified
Typical Applications
EN 10083-3 51CrV4
Valve springs, clutch springs, high duty coil springs
IS 1570 (Part 4) 55Si7
Not documented
Key Differences
Can EN 10083-3 51CrV4 Be Substituted With IS 1570 (Part 4) 55Si7?
EN 10083-3 51CrV4 and IS 1570 (Part 4) 55Si7 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
EN 10083-3 51CrV4
Round Bar → (3 listings)
Diameter: 30–30 mm (1.18–1.18 in)
Length: 6300–7000 mm (248.03–275.59 in)
IS 1570 (Part 4) 55Si7
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On M-EX Right Now
EN 10083-3 51CrV4
3 active listings and RFQs →
IS 1570 (Part 4) 55Si7
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Frequently Asked Questions
What is the difference between EN 10083-3 51CrV4 and IS 1570 (Part 4) 55Si7?
EN 10083-3 51CrV4 specifies Cr, P, S, V which are not specified for IS 1570 (Part 4) 55Si7.
Can EN 10083-3 51CrV4 be substituted with IS 1570 (Part 4) 55Si7?
EN 10083-3 51CrV4 and IS 1570 (Part 4) 55Si7 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.