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UNI 7845 C45 vs BS 970 (Part 1) 045A10

Minimal Match — 53.7% match based on chemical composition and mechanical property overlap.

UNI 7845 C45 (UNI 7845:1978) and BS 970 (Part 1) 045A10 (BS 970 (Part 1):1991) are both steel grades. Both fall under the Carbon Steel category. UNI 7845 C45 is typically used for shafts,axles,gears,studs,bolts,spindles,rollers,general engineering components, while BS 970 (Part 1) 045A10 is commonly used for case hardening steel (section four). UNI 7845 C45 is defined under Ente Nazionale Italiano di Unificazione (UNI), originating from Italy, while BS 970 (Part 1) 045A10 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, UNI 7845 C45 vs BS 970 (Part 1) 045A10 is a 80.6% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 53.7%.

Frequently Compared With UNI 7845 C45:
BS 970 (Part 1) 080A20 BS 970 (Part 3) 070M55 BS 970 (Part 1) 040A10 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045A10 BS 970 (Part 1) 040A04 BS 970 (Part 1) 045M10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 040A12 BS 970 (Part 3) 045M10 BS 970 (Part 1) 055M15 BS 970 (Part 1) 060A32
Match Breakdown
CHEMISTRY MATCH
80.6%
MECHANICAL MATCH
0%
OVERALL
53.7%
Specifications
Property UNI 7845 C45 BS 970 (Part 1) 045A10
Standard UNI 7845:1978 BS 970 (Part 1):1991
Category Carbon Steel Carbon Steel
C (%) 0.42-0.50 0.08-0.13
Si (%) 0.15-0.40 Not specified
Mn (%) 0.50-0.80 0.30-0.60
P (%) <=0.045 Not specified
S (%) <=0.045 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 UNI 7845 C45 BS 970 (Part 1) 045A10
Tensile Strength 620-800 MPa 430 MPa min
Yield Strength 340-490 MPa Not specified
Elongation 14-20 % 18 % min
Hardness 179-235 HB Not specified
Condition Not specified Case hardened, 19 mm test bar
Typical Applications
UNI 7845 C45
shafts,axles,gears,studs,bolts,spindles,rollers,general engineering components
BS 970 (Part 1) 045A10
Case hardening steel (section four)
Key Differences
Can UNI 7845 C45 Be Substituted With BS 970 (Part 1) 045A10?
UNI 7845 C45 and BS 970 (Part 1) 045A10 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 7845 C45
Round Bar → (2 listings)
Diameter: 40–40 mm (1.57–1.57 in)
Length: 5500–6600 mm (216.54–259.84 in)
BS 970 (Part 1) 045A10
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On M-EX Right Now
UNI 7845 C45
2 active listings and RFQs →
BS 970 (Part 1) 045A10
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Frequently Asked Questions
What is the difference between UNI 7845 C45 and BS 970 (Part 1) 045A10?
UNI 7845 C45 specifies Si, P, S which are not specified for BS 970 (Part 1) 045A10.
Can UNI 7845 C45 be substituted with BS 970 (Part 1) 045A10?
UNI 7845 C45 and BS 970 (Part 1) 045A10 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.