Post Stock Login Register

EN 10083-3 39NiCrMo3 vs BS 970 (Part 3) 945M38

Close Alternative — 76.9% match based on chemical composition and mechanical property overlap.

EN 10083-3 39NiCrMo3 (EN 10083-3:2006) and BS 970 (Part 3) 945M38 (BS 970 (Part 3):1991) are both steel grades. Both fall under the Alloy Steel category. EN 10083-3 39NiCrMo3 is typically used for quenched and tempered, flame or induction hardened machine parts (clause 1), while BS 970 (Part 3) 945M38 is commonly used for bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; alloy direct hardening steel (table 16). EN 10083-3 39NiCrMo3 is defined under European Standard (EN), originating from Europe, while BS 970 (Part 3) 945M38 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, EN 10083-3 39NiCrMo3 vs BS 970 (Part 3) 945M38 is a 76.9% 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 76.9%.

Frequently Compared With EN 10083-3 39NiCrMo3:
IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6 NF A35-565 100C6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 7) 10Cr36Mo10H IS 1570 (Part 7) 10Mo6H IS 11169 (Part 1) 10Ni5Cr4 UNI 11234 100Cr6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 10Cr20Mo6 IS 4367 10Cr9Mo10
Match Breakdown
CHEMISTRY MATCH
76.9%
MECHANICAL MATCH
No shared data
OVERALL
76.9%
Specifications
Property EN 10083-3 39NiCrMo3 BS 970 (Part 3) 945M38
Standard EN 10083-3:2006 BS 970 (Part 3):1991
Category Alloy Steel Alloy Steel
C (%) 0.35-0.43 0.34-0.42
Cr (%) 0.60-1.00 0.40-0.60
Mn (%) 0.50-0.80 1.20-1.60
Mo (%) 0.15-0.25 0.15-0.25
Ni (%) 0.70-1.00 0.60-0.90
P (%) <=0.025 <=0.035
S (%) <=0.035 <=0.040
Si (%) <=0.40 0.10-0.40
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property EN 10083-3 39NiCrMo3 BS 970 (Part 3) 945M38
Condition Quenched and tempered (+QT), ruling section d <= 16 mm Not specified
Elongation 11% min Not specified
Hardness Soft annealed (+A): 240 HBW max Not specified
Tensile Strength 980 to 1180 MPa Not specified
Yield Strength 785 MPa min Not specified
Typical Applications
EN 10083-3 39NiCrMo3
Quenched and tempered, flame or induction hardened machine parts (clause 1)
BS 970 (Part 3) 945M38
Bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; alloy direct hardening steel (Table 16)
Can EN 10083-3 39NiCrMo3 Be Substituted With BS 970 (Part 3) 945M38?
EN 10083-3 39NiCrMo3 and BS 970 (Part 3) 945M38 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.
On M-EX Right Now
EN 10083-3 39NiCrMo3
0 active listings and RFQs →
BS 970 (Part 3) 945M38
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between EN 10083-3 39NiCrMo3 and BS 970 (Part 3) 945M38?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can EN 10083-3 39NiCrMo3 be substituted with BS 970 (Part 3) 945M38?
EN 10083-3 39NiCrMo3 and BS 970 (Part 3) 945M38 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.