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UNI 7846 18CrMo4 vs EN 10028-2 10CrMo9-10

Minimal Match — 40.1% match based on chemical composition and mechanical property overlap.

UNI 7846 18CrMo4 (UNI 7846:1978) and EN 10028-2 10CrMo9-10 (EN 10028-2:2017) are both steel grades. Both fall under the Alloy Steel category. UNI 7846 18CrMo4 is typically used for used in gears, shafts, pinions, crankshafts, axles, and heavy machinery components., while EN 10028-2 10CrMo9-10 is commonly used for flat products for pressure purposes. UNI 7846 18CrMo4 is defined under Ente Nazionale Italiano di Unificazione (UNI), originating from Italy, while EN 10028-2 10CrMo9-10 is defined under European Standard (EN), originating from Europe.

As per chemical composition, UNI 7846 18CrMo4 vs EN 10028-2 10CrMo9-10 is a 60.2% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 40.1%.

Frequently Compared With UNI 7846 18CrMo4:
GB/T 3077 12Cr2Ni4A UNI 11234 100Cr6 NF A35-565 100C6 GOST 4543 12HN3A IS 4367 07Cr4Mo6 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 10Cr9Mo10 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 10Cr20Mo6
Match Breakdown
CHEMISTRY MATCH
60.2%
MECHANICAL MATCH
0%
OVERALL
40.1%
Specifications
Property UNI 7846 18CrMo4 EN 10028-2 10CrMo9-10
Standard UNI 7846:1978 EN 10028-2:2017
Category Alloy Steel Alloy Steel
C (%) 0.15-0.21 0.08-0.14
Si (%) 0.15-0.40 <=0.50
Mn (%) 0.60-0.90 0.40-0.80
Cr (%) 0.90-1.20 2.00-2.50
Mo (%) 0.15-0.30 0.90-1.10
P (%) 0.035 max <=0.020
S (%) 0.035 max <=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 UNI 7846 18CrMo4 EN 10028-2 10CrMo9-10
Tensile Strength 700-900 MPa 480-630 MPa
Yield Strength 540 MPa min >=310 MPa
Elongation 14% min >=18%
Hardness 200-260 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
UNI 7846 18CrMo4
Used in gears, shafts, pinions, crankshafts, axles, and heavy machinery components.
EN 10028-2 10CrMo9-10
Flat products for pressure purposes
Key Differences
Can UNI 7846 18CrMo4 Be Substituted With EN 10028-2 10CrMo9-10?
UNI 7846 18CrMo4 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
UNI 7846 18CrMo4
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 5200–5400 mm (204.72–212.6 in)
EN 10028-2 10CrMo9-10
No active listings currently.
On M-EX Right Now
UNI 7846 18CrMo4
2 active listings and RFQs →
EN 10028-2 10CrMo9-10
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between UNI 7846 18CrMo4 and EN 10028-2 10CrMo9-10?
EN 10028-2 10CrMo9-10 specifies N, Cu which are not specified for UNI 7846 18CrMo4.
Can UNI 7846 18CrMo4 be substituted with EN 10028-2 10CrMo9-10?
UNI 7846 18CrMo4 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.