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BS 970 EN40C vs UNI 11234 100Cr6

Minimal Match — 34.6% match based on chemical composition and mechanical property overlap.

BS 970 EN40C (BS 970:1955) and UNI 11234 100Cr6 (UNI 11234:2007) are both steel grades. Both fall under the Alloy Steel category. BS 970 EN40C is typically used for bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars. suitable where higher core strength is required for nitriding than en 40b provides; purchaser recommended to consult the manufacturer., while UNI 11234 100Cr6 is commonly used for ball bearings,roller bearings,needle bearings,dies,punches,gauges,wear resistant components. BS 970 EN40C is defined under British Standards (BS), originating from United Kingdom, while UNI 11234 100Cr6 is defined under Ente Nazionale Italiano di Unificazione (UNI), originating from Italy.

As per chemical composition, BS 970 EN40C vs UNI 11234 100Cr6 is a 51.9% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 34.6%.

Frequently Compared With BS 970 EN40C:
IS 1570 (Part 7) 10Cr36Mo10H IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 105Cr5 IS 4367 10Cr9Mo10 IS 4367 07Cr4Mo6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 4) 10Mo6 IS 1570 (Part 7) 10Mo6H NF A35-565 100C6 IS 1570 (Part 4) 103Cr6 IS 11169 (Part 1) 10Ni5Cr4
Match Breakdown
CHEMISTRY MATCH
51.9%
MECHANICAL MATCH
0%
OVERALL
34.6%
Specifications
Property BS 970 EN40C UNI 11234 100Cr6
Standard BS 970:1955 UNI 11234:2007
Category Alloy Steel Alloy Steel
C (%) 0.30-0.50 0.93-1.05
Si (%) 0.10-0.35 0.15-0.35
Mn (%) 0.40-0.80 0.25-0.45
Ni (%) <=0.40 Not specified
Cr (%) 2.50-3.50 1.35-1.65
Mo (%) 0.70-1.20 Not specified
V (%) 0.10-0.30 Not specified
S (%) <=0.050 <=0.025
P (%) <=0.050 <=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 BS 970 EN40C UNI 11234 100Cr6
Tensile Strength ≥1313 MPa (85 tons/sq in, converted) 750-1000 MPa
Yield Strength ≥1112 MPa (72 tons/sq in, converted) 400-600 MPa
Elongation ≥10% 10-14 %
Hardness 375-444 HB 60-64 HRC
Condition Hardened and tempered (single condition), ruling section 2 1/2 in (lowest-strength condition of the standard) Not specified
Typical Applications
BS 970 EN40C
Bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars. Suitable where higher core strength is required for nitriding than En 40B provides; purchaser recommended to consult the manufacturer.
UNI 11234 100Cr6
ball bearings,roller bearings,needle bearings,dies,punches,gauges,wear resistant components
Key Differences
Can BS 970 EN40C Be Substituted With UNI 11234 100Cr6?
BS 970 EN40C 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
BS 970 EN40C
No active listings currently.
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
BS 970 EN40C
0 active listings and RFQs →
UNI 11234 100Cr6
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 970 EN40C and UNI 11234 100Cr6?
BS 970 EN40C specifies Ni, Mo, V which are not specified for UNI 11234 100Cr6.
Can BS 970 EN40C be substituted with UNI 11234 100Cr6?
BS 970 EN40C 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.