AISI 5120 vs NF A35-565 100C6

Minimal Match — 49.6% match based on chemical composition and mechanical property overlap.

AISI 5120 and NF A35-565 100C6 are both steel grades. Both fall under the Alloy Steel category. AISI 5120 is typically used for case hardened gears, pins, shafts, cams, while NF A35-565 100C6 is commonly used for ball bearings, roller bearings, bearing races, rollers, precision tools, wear resistant parts. AISI 5120 is defined under AISI, originating from United States, while NF A35-565 100C6 is defined under Association Francaise de Normalisation (NF), originating from France.

As per chemical composition, AISI 5120 vs NF A35-565 100C6 is a 74.4% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 49.6%.

Frequently Compared With AISI 5120:
GB/T 3077 12Cr2Ni4A UNI 11234 100Cr6 GOST 4543 12HN3A IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 7) 10Cr36Mo10H IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 103Cr4 IS 4367 10Cr9Mo10 EN 10028-2 10CrMo9-10
Match Breakdown
CHEMISTRY MATCH
74.4%
MECHANICAL MATCH
0%
OVERALL
49.6%
Specifications
Property AISI 5120 NF A35-565 100C6
Standard AISI NF A35-565
Category Alloy Steel Alloy Steel
C (%) 0.17–0.22 0.95-1.05
Mn (%) 0.70–0.90 0.25-0.45
Cr (%) 0.70–0.90 1.35-1.65
Si (%) 0.15–0.35 0.15-0.35
S (%) Not specified <=0.025
P (%) Not specified <=0.027
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 NF A35-565 100C6
Condition Carburized & Case Hardened Not specified
Tensile Strength 750–950 MPa 850-1100 MPa
Case Hardness HRC 58–62 Not specified
Core Hardness HB 207–269 Not specified
Hardness Not specified 60-66 HRC
Typical Applications
AISI 5120
Case hardened gears, pins, shafts, cams
NF A35-565 100C6
ball bearings, roller bearings, bearing races, rollers, precision tools, wear resistant parts
Key Differences
Can AISI 5120 Be Substituted With NF A35-565 100C6?
AISI 5120 and NF A35-565 100C6 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)
NF A35-565 100C6
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 6700–6700 mm (263.78–263.78 in)
On M-EX Right Now
AISI 5120
2 active listings and RFQs →
NF A35-565 100C6
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between AISI 5120 and NF A35-565 100C6?
NF A35-565 100C6 specifies S, P which are not specified for AISI 5120.
Can AISI 5120 be substituted with NF A35-565 100C6?
AISI 5120 and NF A35-565 100C6 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.