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UNI 7846 16NiCr11 vs BS 970 (Part 3) 655M13

Close Alternative — 80.8% match based on chemical composition and mechanical property overlap.

UNI 7846 16NiCr11 (UNI 7846:1978) and BS 970 (Part 3) 655M13 (BS 970 (Part 3):1991) are both steel grades. Both fall under the Alloy Steel category. UNI 7846 16NiCr11 is typically used for gears,pinion shafts,camshafts,transmission parts,heavy duty components,case hardened parts, while BS 970 (Part 3) 655M13 is commonly used for bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; alloy case hardening steel (table 15). UNI 7846 16NiCr11 is defined under Ente Nazionale Italiano di Unificazione (UNI), originating from Italy, while BS 970 (Part 3) 655M13 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, UNI 7846 16NiCr11 vs BS 970 (Part 3) 655M13 is a 80.8% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a close alternative overall at 80.8%.

Frequently Compared With UNI 7846 16NiCr11:
GB/T 3077 12Cr2Ni4A GOST 4543 12HN3A UNI 11234 100Cr6 NF A35-565 100C6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 7) 10Cr36Mo10H IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 10Cr20Mo6 IS 4367 10Cr9Mo10 IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 103Cr4
Match Breakdown
CHEMISTRY MATCH
80.8%
MECHANICAL MATCH
No shared data
OVERALL
80.8%
Specifications
Property UNI 7846 16NiCr11 BS 970 (Part 3) 655M13
Standard UNI 7846:1978 BS 970 (Part 3):1991
Category Alloy Steel Alloy Steel
C (%) 0.13-0.18 0.10-0.16
Si (%) 0.15-0.40 0.10-0.40
Mn (%) 0.30-0.60 0.35-0.60
P (%) <=0.035 <=0.04
S (%) <=0.035 <=0.05
Cr (%) 0.60-1.00 0.70-1.00
Ni (%) 2.50-3.00 3.00-3.75
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property UNI 7846 16NiCr11 BS 970 (Part 3) 655M13
Tensile Strength 700-950 MPa Not specified
Yield Strength 400-600 MPa Not specified
Elongation 10-15 % Not specified
Hardness 58-62 HRC Not specified
Typical Applications
UNI 7846 16NiCr11
gears,pinion shafts,camshafts,transmission parts,heavy duty components,case hardened parts
BS 970 (Part 3) 655M13
Bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; alloy case hardening steel (Table 15)
Can UNI 7846 16NiCr11 Be Substituted With BS 970 (Part 3) 655M13?
UNI 7846 16NiCr11 and BS 970 (Part 3) 655M13 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.
Forms & Sizes Available on M-EX
UNI 7846 16NiCr11
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 5600–6000 mm (220.47–236.22 in)
BS 970 (Part 3) 655M13
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On M-EX Right Now
UNI 7846 16NiCr11
2 active listings and RFQs →
BS 970 (Part 3) 655M13
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Frequently Asked Questions
What is the difference between UNI 7846 16NiCr11 and BS 970 (Part 3) 655M13?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can UNI 7846 16NiCr11 be substituted with BS 970 (Part 3) 655M13?
UNI 7846 16NiCr11 and BS 970 (Part 3) 655M13 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.