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BS 970 EN356 vs IS 1570 (Part 4) 103Cr4

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

BS 970 EN356 (BS 970:1955) and IS 1570 (Part 4) 103Cr4 (IS 1570 (Part 4):1988) are both steel grades. Both fall under the Alloy Steel category. BS 970 EN356 is defined under British Standards (BS), originating from United Kingdom, while IS 1570 (Part 4) 103Cr4 is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, BS 970 EN356 vs IS 1570 (Part 4) 103Cr4 is a 70.7% 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 BS 970 EN356:
UNI 11234 100Cr6 NF A35-565 100C6 GB/T 3077 12Cr2Ni4A GOST 4543 12HN3A IS 4367 07Cr4Mo6 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 10Cr9Mo10 EN 10028-2 10CrMo9-10
Match Breakdown
CHEMISTRY MATCH
70.7%
MECHANICAL MATCH
No shared data
OVERALL
35%
Specifications
Property BS 970 EN356 IS 1570 (Part 4) 103Cr4
Standard BS 970:1955 IS 1570 (Part 4):1988
Category Alloy Steel Alloy Steel
C (%) 0.14–0.20 0.95-1.10
Mn (%) 0.35–0.65 0.25-0.45
Cr (%) 0.90–1.30 0.90-1.20
Ni (%) 3.90–4.30 Not specified
Si (%) Not specified 0.10-0.35
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 EN356 IS 1570 (Part 4) 103Cr4
Tensile Strength 850–1000 MPa Not specified
Case Hardness HRC 60–64 Not specified
Elongation ≥12% Not specified
Typical Applications
BS 970 EN356
Heavily stressed gears, differential components
IS 1570 (Part 4) 103Cr4
Not documented
Key Differences
Can BS 970 EN356 Be Substituted With IS 1570 (Part 4) 103Cr4?
BS 970 EN356 and IS 1570 (Part 4) 103Cr4 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 EN356
Round Bar → (3 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 3900–5900 mm (153.54–232.28 in)
IS 1570 (Part 4) 103Cr4
No active listings currently.
On M-EX Right Now
BS 970 EN356
3 active listings and RFQs →
IS 1570 (Part 4) 103Cr4
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 970 EN356 and IS 1570 (Part 4) 103Cr4?
BS 970 EN356 specifies Ni which is not specified for IS 1570 (Part 4) 103Cr4. IS 1570 (Part 4) 103Cr4 specifies Si which is not specified for BS 970 EN356.
Can BS 970 EN356 be substituted with IS 1570 (Part 4) 103Cr4?
BS 970 EN356 and IS 1570 (Part 4) 103Cr4 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.