Post Stock Login Register

BS 970 EN100D vs BS 970 (Part 3) 945M38

Close Alternative — 82.4% match based on chemical composition and mechanical property overlap.

BS 970 EN100D (BS 970:1955) and BS 970 (Part 3) 945M38 (BS 970 (Part 3):1991) are both steel grades. Both fall under the Alloy Steel category. BS 970 EN100D is defined under British Standards (BS), originating from United Kingdom, while BS 970 (Part 3) 945M38 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, BS 970 EN100D vs BS 970 (Part 3) 945M38 is a 82.4% 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 82.4%.

Frequently Compared With BS 970 EN100D:
IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 10Cr20Mo6 NF A35-565 100C6 IS 1570 (Part 4) 10Mo6 IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6 UNI 11234 100Cr6 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 7) 10Mo6H IS 1570 (Part 7) 10Cr36Mo10H IS 4367 10Cr9Mo10
Match Breakdown
CHEMISTRY MATCH
82.4%
MECHANICAL MATCH
No shared data
OVERALL
82.4%
Specifications
Property BS 970 EN100D BS 970 (Part 3) 945M38
Standard BS 970:1955 BS 970 (Part 3):1991
Category Alloy Steel Alloy Steel
C (%) 0.40-0.45 0.34-0.42
Si (%) 0.10-0.50 0.10-0.40
Mn (%) 1.20-1.50 1.20-1.60
Ni (%) 0.50-1.00 0.60-0.90
Cr (%) 0.30-0.60 0.40-0.60
Mo (%) 0.15-0.25 0.15-0.25
S (%) <=0.050 <=0.040
P (%) <=0.050 <=0.035
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 EN100D BS 970 (Part 3) 945M38
Tensile Strength ≥695 MPa (45 tons/sq in, converted) Not specified
Yield Strength ≥525 MPa (34 tons/sq in, converted) Not specified
Elongation ≥22% Not specified
Hardness 201-255 HB Not specified
Condition Hardened and tempered R, ruling section 6 in (lowest-strength condition of the standard) Not specified
Typical Applications
BS 970 EN100D
Not documented
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 BS 970 EN100D Be Substituted With BS 970 (Part 3) 945M38?
BS 970 EN100D 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
BS 970 EN100D
0 active listings and RFQs →
BS 970 (Part 3) 945M38
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 970 EN100D 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 BS 970 EN100D be substituted with BS 970 (Part 3) 945M38?
BS 970 EN100D 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.