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GOST 4543 40HFA vs UNI 11234 100Cr6

Minimal Match — 46.1% match based on chemical composition and mechanical property overlap.

GOST 4543 40HFA (GOST 4543-2016) and UNI 11234 100Cr6 (UNI 11234:2007) are both steel grades. Both fall under the Alloy Steel category. GOST 4543 40HFA is typically used for used for springs, shafts, gears, fasteners, and aircraft structural components., 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 40HFA vs UNI 11234 100Cr6 is a 67.5% match. As per mechanical properties, the match is 3.1%. Combined, this makes them a minimal match overall at 46.1%.

Frequently Compared With GOST 4543 40HFA:
NF A35-565 100C6 GOST 4543 12HN3A GB/T 3077 12Cr2Ni4A IS 1570 (Part 4) 103Cr4 IS 4367 07Cr4Mo6 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 10Cr9Mo10 EN 10028-2 10CrMo9-10
Match Breakdown
CHEMISTRY MATCH
67.5%
MECHANICAL MATCH
3.1%
OVERALL
46.1%
Specifications
Property GOST 4543 40HFA UNI 11234 100Cr6
Standard GOST 4543-2016 UNI 11234:2007
Category Alloy Steel Alloy Steel
C (%) 0.37-0.44 0.93-1.05
Cr (%) 0.8-1.1 1.35-1.65
V (%) 0.1-0.2 Not specified
Mn (%) 0.5-0.8 0.25-0.45
Si (%) 0.17-0.37 0.15-0.35
P (%) Not specified <=0.025
S (%) Not specified <=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 GOST 4543 40HFA UNI 11234 100Cr6
Tensile Strength 950-1150 MPa 750-1000 MPa
Yield Strength 785 MPa min 400-600 MPa
Elongation 11% min 10-14 %
Hardness 269-331 HB 60-64 HRC
Typical Applications
GOST 4543 40HFA
Used for springs, shafts, gears, fasteners, and aircraft structural components.
UNI 11234 100Cr6
ball bearings,roller bearings,needle bearings,dies,punches,gauges,wear resistant components
Key Differences
Can GOST 4543 40HFA Be Substituted With UNI 11234 100Cr6?
GOST 4543 40HFA 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 40HFA
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 6500–6600 mm (255.91–259.84 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 40HFA
2 active listings and RFQs →
UNI 11234 100Cr6
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between GOST 4543 40HFA and UNI 11234 100Cr6?
GOST 4543 40HFA specifies V which is not specified for UNI 11234 100Cr6. UNI 11234 100Cr6 specifies P, S which are not specified for GOST 4543 40HFA.
Can GOST 4543 40HFA be substituted with UNI 11234 100Cr6?
GOST 4543 40HFA 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.