Post Stock Login Register

BS 970 EN24 vs IS 1570 (Part 4) 40Cr5Mo6

Close Alternative — 79% match based on chemical composition and mechanical property overlap.

BS 970 EN24 (BS 970:1955) and IS 1570 (Part 4) 40Cr5Mo6 (IS 1570 (Part 4):1988) are both steel grades. Both fall under the Alloy Steel category. BS 970 EN24 is defined under British Standards (BS), originating from United Kingdom, while IS 1570 (Part 4) 40Cr5Mo6 is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, BS 970 EN24 vs IS 1570 (Part 4) 40Cr5Mo6 is a 79% 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 79%.

Frequently Compared With BS 970 EN24:
NF A35-565 100C6 UNI 11234 100Cr6 GOST 4543 12HN3A GB/T 3077 12Cr2Ni4A IS 4367 07Cr4Mo6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 10Cr9Mo10 IS 1570 (Part 4) 103Cr6
Match Breakdown
CHEMISTRY MATCH
79%
MECHANICAL MATCH
No shared data
OVERALL
79%
Specifications
Property BS 970 EN24 IS 1570 (Part 4) 40Cr5Mo6
Standard BS 970:1955 IS 1570 (Part 4):1988
Category Alloy Steel Alloy Steel
C (%) 0.35-0.45 0.35-0.45
Si (%) 0.10-0.35 0.10-0.35
Mn (%) 0.45-0.70 0.40-0.70
Ni (%) 1.30-1.80 <=0.40
Cr (%) 0.90-1.40 1.00-1.50
Mo (%) 0.20-0.35 0.50-0.70
S (%) <=0.050 Not specified
P (%) <=0.050 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 BS 970 EN24 IS 1570 (Part 4) 40Cr5Mo6
Tensile Strength ≥772 MPa (50 tons/sq in, converted) Not specified
Yield Strength ≥587 MPa (38 tons/sq in, converted) Not specified
Elongation ≥20% Not specified
Hardness 223-277 HB Not specified
Condition Hardened and tempered S, ruling section 6 in (lowest-strength condition of the standard) Not specified
Typical Applications
BS 970 EN24
Heavy duty gears, shafts, connecting rods
IS 1570 (Part 4) 40Cr5Mo6
Not documented
Key Differences
Can BS 970 EN24 Be Substituted With IS 1570 (Part 4) 40Cr5Mo6?
BS 970 EN24 and IS 1570 (Part 4) 40Cr5Mo6 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
BS 970 EN24
Round Bar → (26 listings)
Diameter: 50–130 mm (1.97–5.12 in)
Length: 4800–7000 mm (188.98–275.59 in)
Flat Bar → (6 listings)
Thickness: 25–40 mm (0.98–1.57 in)
Width: 200–200 mm (7.87–7.87 in)
Length: 2500–3900 mm (98.43–153.54 in)
Hex Bar → (4 listings)
Across Flats: 45–50 mm (1.77–1.97 in)
Length: 2500–3900 mm (98.43–153.54 in)
IS 1570 (Part 4) 40Cr5Mo6
No active listings currently.
On M-EX Right Now
BS 970 EN24
36 active listings and RFQs →
IS 1570 (Part 4) 40Cr5Mo6
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 970 EN24 and IS 1570 (Part 4) 40Cr5Mo6?
BS 970 EN24 specifies S, P which are not specified for IS 1570 (Part 4) 40Cr5Mo6.
Can BS 970 EN24 be substituted with IS 1570 (Part 4) 40Cr5Mo6?
BS 970 EN24 and IS 1570 (Part 4) 40Cr5Mo6 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.