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JIS G4103 SNCM439 vs EN 10028-2 10CrMo9-10

Minimal Match — 33.5% match based on chemical composition and mechanical property overlap.

JIS G4103 SNCM439 (JIS G4103:1979) and EN 10028-2 10CrMo9-10 (EN 10028-2:2017) are both steel grades. Both fall under the Alloy Steel category. JIS G4103 SNCM439 is typically used for crankshafts, gears, heavy duty shafts, aircraft components, while EN 10028-2 10CrMo9-10 is commonly used for flat products for pressure purposes. JIS G4103 SNCM439 is defined under Japanese Industrial Standards (JIS), originating from Japan, while EN 10028-2 10CrMo9-10 is defined under European Standard (EN), originating from Europe.

As per chemical composition, JIS G4103 SNCM439 vs EN 10028-2 10CrMo9-10 is a 50.3% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 33.5%.

Frequently Compared With JIS G4103 SNCM439:
GOST 4543 12HN3A NF A35-565 100C6 UNI 11234 100Cr6 GB/T 3077 12Cr2Ni4A IS 1570 (Part 4) 07Cr4Mo6 IS 4367 07Cr4Mo6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 103Cr6 IS 4367 10Cr9Mo10 IS 1570 (Part 7) 10Cr36Mo10H
Match Breakdown
CHEMISTRY MATCH
50.3%
MECHANICAL MATCH
0%
OVERALL
33.5%
Specifications
Property JIS G4103 SNCM439 EN 10028-2 10CrMo9-10
Standard JIS G4103:1979 EN 10028-2:2017
Category Alloy Steel Alloy Steel
C (%) 0.36–0.43 0.08-0.14
Si (%) 0.15–0.35 <=0.50
Mn (%) 0.60–0.90 0.40-0.80
Cr (%) 0.60–1.00 2.00-2.50
Mo (%) 0.15–0.30 0.90-1.10
Ni (%) 1.60–2.00 Not specified
P (%) Not specified <=0.020
S (%) Not specified <=0.010
N (%) Not specified <=0.012
Cu (%) Not specified <=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 JIS G4103 SNCM439 EN 10028-2 10CrMo9-10
Tensile Strength ≥980 MPa 480-630 MPa
Yield Strength ≥835 MPa >=310 MPa
Elongation ≥12% >=18%
Hardness 293–352 HB Not specified
Condition Not specified Usual delivery condition normalized and tempered (+NT), nominal thickness up to 16 mm; transverse direction, Yield Strength is ReH, Elongation is A
Typical Applications
JIS G4103 SNCM439
Crankshafts, gears, heavy duty shafts, aircraft components
EN 10028-2 10CrMo9-10
Flat products for pressure purposes
Key Differences
Can JIS G4103 SNCM439 Be Substituted With EN 10028-2 10CrMo9-10?
JIS G4103 SNCM439 and EN 10028-2 10CrMo9-10 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
JIS G4103 SNCM439
Round Bar → (3 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 4900–5800 mm (192.91–228.35 in)
EN 10028-2 10CrMo9-10
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On M-EX Right Now
JIS G4103 SNCM439
3 active listings and RFQs →
EN 10028-2 10CrMo9-10
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Frequently Asked Questions
What is the difference between JIS G4103 SNCM439 and EN 10028-2 10CrMo9-10?
JIS G4103 SNCM439 specifies Ni which is not specified for EN 10028-2 10CrMo9-10. EN 10028-2 10CrMo9-10 specifies P, S, N, Cu which are not specified for JIS G4103 SNCM439.
Can JIS G4103 SNCM439 be substituted with EN 10028-2 10CrMo9-10?
JIS G4103 SNCM439 and EN 10028-2 10CrMo9-10 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.