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GOST 4543 40XH vs UNI 11234 100Cr6

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

GOST 4543 40XH (GOST 4543-2016) and UNI 11234 100Cr6 (UNI 11234:2007) are both steel grades. Both fall under the Alloy Steel category. GOST 4543 40XH is typically used for heavy-duty gears, transmission shafts, axles, high-strength fasteners, forged machinery parts, while UNI 11234 100Cr6 is commonly used for ball bearings,roller bearings,needle bearings,dies,punches,gauges,wear resistant components. UNI 11234 100Cr6 is defined under Ente Nazionale Italiano di Unificazione (UNI) (Italy).

As per chemical composition, GOST 4543 40XH vs UNI 11234 100Cr6 is a 63.5% match. As per mechanical properties, the match is 1.2%. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With GOST 4543 40XH:
GOST 4543 12HN3A NF A35-565 100C6 GB/T 3077 12Cr2Ni4A IS 1570 (Part 4) 103Cr6 IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 7) 10Cr36Mo10H IS 1570 (Part 4) 10Cr20Mo6 IS 4367 10Cr9Mo10 EN 10028-2 10CrMo9-10
Match Breakdown
CHEMISTRY MATCH
63.5%
MECHANICAL MATCH
1.2%
OVERALL
35%
Specifications
Property GOST 4543 40XH UNI 11234 100Cr6
Standard GOST 4543-2016 UNI 11234:2007
Category Alloy Steel Alloy Steel
C (%) 0.36-0.44 0.93-1.05
Si (%) 0.17-0.37 0.15-0.35
Mn (%) 0.50-0.80 0.25-0.45
S (%) <=0.035 <=0.025
P (%) <=0.035 <=0.025
Cr (%) 0.45-0.75 1.35-1.65
Ni (%) 1.00-1.40 Not specified
Cu (%) <=0.30 Not specified
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property GOST 4543 40XH UNI 11234 100Cr6
Tensile Strength 980-1180 MPa 750-1000 MPa
Yield Strength >=785 MPa 400-600 MPa
Elongation >=10% 10-14 %
Hardness 241-285 HB 60-64 HRC
Typical Applications
GOST 4543 40XH
heavy-duty gears, transmission shafts, axles, high-strength fasteners, forged machinery parts
UNI 11234 100Cr6
ball bearings,roller bearings,needle bearings,dies,punches,gauges,wear resistant components
Key Differences
Can GOST 4543 40XH Be Substituted With UNI 11234 100Cr6?
GOST 4543 40XH 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
GOST 4543 40XH
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 5900–6100 mm (232.28–240.16 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
GOST 4543 40XH
2 active listings and RFQs →
UNI 11234 100Cr6
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between GOST 4543 40XH and UNI 11234 100Cr6?
GOST 4543 40XH specifies Ni, Cu which are not specified for UNI 11234 100Cr6.
Can GOST 4543 40XH be substituted with UNI 11234 100Cr6?
GOST 4543 40XH 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.