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BS 970 EN18A vs UNI 11234 100Cr6

Minimal Match — 48.8% match based on chemical composition and mechanical property overlap.

BS 970 EN18A (BS 970:1955) and UNI 11234 100Cr6 (UNI 11234:2007) are both steel grades. Both fall under the Alloy Steel category. BS 970 EN18A 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 EN18A vs UNI 11234 100Cr6 is a 73.1% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 48.8%.

Frequently Compared With BS 970 EN18A:
IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 11169 (Part 1) 10Ni5Cr4 IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6 NF A35-565 100C6 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 105Cr5 IS 4367 10Cr9Mo10 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 10Mo6 IS 1570 (Part 7) 10Mo6H
Match Breakdown
CHEMISTRY MATCH
73.1%
MECHANICAL MATCH
0%
OVERALL
48.8%
Specifications
Property BS 970 EN18A UNI 11234 100Cr6
Standard BS 970:1955 UNI 11234:2007
Category Alloy Steel Alloy Steel
C (%) 0.27-0.32 0.93-1.05
Si (%) 0.10-0.35 0.15-0.35
Mn (%) 0.65-0.80 0.25-0.45
Cr (%) 0.85-1.15 1.35-1.65
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 EN18A UNI 11234 100Cr6
Tensile Strength ≥695 MPa (45 tons/sq in, converted) 750-1000 MPa
Yield Strength ≥525 MPa (34 tons/sq in, converted) 400-600 MPa
Elongation ≥22% 10-14 %
Hardness 201-255 HB 60-64 HRC
Condition Hardened and tempered R, ruling section 4 in (lowest-strength condition of the standard) Not specified
Typical Applications
BS 970 EN18A
Not documented
UNI 11234 100Cr6
ball bearings,roller bearings,needle bearings,dies,punches,gauges,wear resistant components
Can BS 970 EN18A Be Substituted With UNI 11234 100Cr6?
BS 970 EN18A 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 EN18A
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 EN18A
0 active listings and RFQs →
UNI 11234 100Cr6
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 970 EN18A and UNI 11234 100Cr6?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 EN18A be substituted with UNI 11234 100Cr6?
BS 970 EN18A 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.