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AISI 5120 vs EN 10028-2 10CrMo9-10

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

AISI 5120 and EN 10028-2 10CrMo9-10 (EN 10028-2:2017) are both steel grades. Both fall under the Alloy Steel category. AISI 5120 is typically used for case hardened gears, pins, shafts, cams, while EN 10028-2 10CrMo9-10 is commonly used for flat products for pressure purposes. AISI 5120 is defined under AISI, originating from United States, while EN 10028-2 10CrMo9-10 is defined under European Standard (EN), originating from Europe.

As per chemical composition, AISI 5120 vs EN 10028-2 10CrMo9-10 is a 57.7% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With AISI 5120:
GB/T 3077 12Cr2Ni4A GOST 4543 12HN3A UNI 11234 100Cr6 NF A35-565 100C6 IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 1570 (Part 4) 105Cr5 IS 4367 10Cr9Mo10 IS 1570 (Part 4) 103Cr4
Match Breakdown
CHEMISTRY MATCH
57.7%
MECHANICAL MATCH
0%
OVERALL
35%
Specifications
Property AISI 5120 EN 10028-2 10CrMo9-10
Standard AISI EN 10028-2:2017
Category Alloy Steel Alloy Steel
C (%) 0.17–0.22 0.08-0.14
Mn (%) 0.70–0.90 0.40-0.80
Cr (%) 0.70–0.90 2.00-2.50
Si (%) 0.15–0.35 <=0.50
P (%) Not specified <=0.020
S (%) Not specified <=0.010
N (%) Not specified <=0.012
Cu (%) Not specified <=0.30
Mo (%) Not specified 0.90-1.10
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property AISI 5120 EN 10028-2 10CrMo9-10
Condition Carburized & Case Hardened Usual delivery condition normalized and tempered (+NT), nominal thickness up to 16 mm; transverse direction, Yield Strength is ReH, Elongation is A
Tensile Strength 750–950 MPa 480-630 MPa
Case Hardness HRC 58–62 Not specified
Core Hardness HB 207–269 Not specified
Yield Strength Not specified >=310 MPa
Elongation Not specified >=18%
Typical Applications
AISI 5120
Case hardened gears, pins, shafts, cams
EN 10028-2 10CrMo9-10
Flat products for pressure purposes
Key Differences
Can AISI 5120 Be Substituted With EN 10028-2 10CrMo9-10?
AISI 5120 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
AISI 5120
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 5100–6500 mm (200.79–255.91 in)
EN 10028-2 10CrMo9-10
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On M-EX Right Now
AISI 5120
2 active listings and RFQs →
EN 10028-2 10CrMo9-10
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Frequently Asked Questions
What is the difference between AISI 5120 and EN 10028-2 10CrMo9-10?
EN 10028-2 10CrMo9-10 specifies P, S, N, Cu which are not specified for AISI 5120.
Can AISI 5120 be substituted with EN 10028-2 10CrMo9-10?
AISI 5120 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.