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ISO 683-17 20NiCrMo7 vs IS 1570 (Part 4) 103Cr4

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

ISO 683-17 20NiCrMo7 (ISO 683-17:1999) and IS 1570 (Part 4) 103Cr4 (IS 1570 (Part 4):1988) are both steel grades. Both fall under the Alloy Steel category. ISO 683-17 20NiCrMo7 is defined under International Organization for Standardization (ISO), originating from International, while IS 1570 (Part 4) 103Cr4 is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, ISO 683-17 20NiCrMo7 vs IS 1570 (Part 4) 103Cr4 is a 56.3% 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 ISO 683-17 20NiCrMo7:
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) 10Cr20Mo6 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 10Cr9Mo10
Other Alloy Steel Grades to Compare With ISO 683-17 20NiCrMo7:
EN 10028-2 10CrMo9-10
Match Breakdown
CHEMISTRY MATCH
56.3%
MECHANICAL MATCH
No shared data
OVERALL
35%
Specifications
Property ISO 683-17 20NiCrMo7 IS 1570 (Part 4) 103Cr4
Standard ISO 683-17:1999 IS 1570 (Part 4):1988
Category Alloy Steel Alloy Steel
C (%) 0.17-0.22 0.95-1.10
Si (%) 0.15-0.30 0.10-0.35
Mn (%) 0.45-0.65 0.25-0.45
Cr (%) 0.40-0.60 0.90-1.20
Mo (%) 0.20-0.30 Not specified
Ni (%) 1.65-2.00 Not specified
P (%) <=0.035 Not specified
S (%) <=0.040 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 ISO 683-17 20NiCrMo7 IS 1570 (Part 4) 103Cr4
Tensile Strength 1000-1300 MPa Not specified
Yield Strength 800 MPa min Not specified
Elongation 9-12% Not specified
Hardness 300-360 HB Not specified
Typical Applications
ISO 683-17 20NiCrMo7
Used in large gears, turbine shafts, marine gearboxes, heavy-duty pinions, and industrial transmissions.
IS 1570 (Part 4) 103Cr4
Not documented
Key Differences
Can ISO 683-17 20NiCrMo7 Be Substituted With IS 1570 (Part 4) 103Cr4?
ISO 683-17 20NiCrMo7 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
ISO 683-17 20NiCrMo7
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 6600–7000 mm (259.84–275.59 in)
IS 1570 (Part 4) 103Cr4
No active listings currently.
On M-EX Right Now
ISO 683-17 20NiCrMo7
2 active listings and RFQs →
IS 1570 (Part 4) 103Cr4
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Frequently Asked Questions
What is the difference between ISO 683-17 20NiCrMo7 and IS 1570 (Part 4) 103Cr4?
ISO 683-17 20NiCrMo7 specifies Mo, Ni, P, S which are not specified for IS 1570 (Part 4) 103Cr4.
Can ISO 683-17 20NiCrMo7 be substituted with IS 1570 (Part 4) 103Cr4?
ISO 683-17 20NiCrMo7 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.