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UNI 7846 18CrMo4 vs UNI 11234 100Cr6

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

UNI 7846 18CrMo4 (UNI 7846:1978) and UNI 11234 100Cr6 (UNI 11234:2007) 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 UNI 11234 100Cr6 is commonly used for ball bearings,roller bearings,needle bearings,dies,punches,gauges,wear resistant components. UNI 7846 18CrMo4 is defined under Ente Nazionale Italiano di Unificazione (UNI), originating from Italy, while UNI 11234 100Cr6 is defined under Ente Nazionale Italiano di Unificazione (UNI), originating from Italy.

As per chemical composition, UNI 7846 18CrMo4 vs UNI 11234 100Cr6 is a 65.8% match. As per mechanical properties, the match is 12.5%. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With UNI 7846 18CrMo4:
GB/T 3077 12Cr2Ni4A NF A35-565 100C6 GOST 4543 12HN3A IS 4367 07Cr4Mo6 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 105Cr5 IS 4367 10Cr9Mo10 IS 1570 (Part 7) 10Cr36Mo10H IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 10Cr20Mo6 EN 10028-2 10CrMo9-10
Match Breakdown
CHEMISTRY MATCH
65.8%
MECHANICAL MATCH
12.5%
OVERALL
35%
Specifications
Property UNI 7846 18CrMo4 UNI 11234 100Cr6
Standard UNI 7846:1978 UNI 11234:2007
Category Alloy Steel Alloy Steel
C (%) 0.15-0.21 0.93-1.05
Si (%) 0.15-0.40 0.15-0.35
Mn (%) 0.60-0.90 0.25-0.45
Cr (%) 0.90-1.20 1.35-1.65
Mo (%) 0.15-0.30 Not specified
P (%) 0.035 max <=0.025
S (%) 0.035 max <=0.025
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 UNI 11234 100Cr6
Tensile Strength 700-900 MPa 750-1000 MPa
Yield Strength 540 MPa min 400-600 MPa
Elongation 14% min 10-14 %
Hardness 200-260 HB 60-64 HRC
Typical Applications
UNI 7846 18CrMo4
Used in gears, shafts, pinions, crankshafts, axles, and heavy machinery components.
UNI 11234 100Cr6
ball bearings,roller bearings,needle bearings,dies,punches,gauges,wear resistant components
Key Differences
Can UNI 7846 18CrMo4 Be Substituted With UNI 11234 100Cr6?
UNI 7846 18CrMo4 and UNI 11234 100Cr6 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)
UNI 11234 100Cr6
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 5700–6800 mm (224.41–267.72 in)
On M-EX Right Now
UNI 7846 18CrMo4
2 active listings and RFQs →
UNI 11234 100Cr6
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between UNI 7846 18CrMo4 and UNI 11234 100Cr6?
UNI 7846 18CrMo4 specifies Mo which is not specified for UNI 11234 100Cr6.
Can UNI 7846 18CrMo4 be substituted with UNI 11234 100Cr6?
UNI 7846 18CrMo4 and UNI 11234 100Cr6 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.