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IS 1570 (Part 6) T55Si7Mo3 vs BS 970 EN16

Related Material — 65% match based on chemical composition and mechanical property overlap.

IS 1570 (Part 6) T55Si7Mo3 (IS 1570 (Part 6):1996) and BS 970 EN16 (BS 970:1955) are both steel grades. IS 1570 (Part 6) T55Si7Mo3 is classified under Tool & Die Steels, while BS 970 EN16 is classified under Alloy Steel — a different category, which is worth noting alongside the chemistry match below. IS 1570 (Part 6) T55Si7Mo3 is defined under Bureau of Indian Standards (IS), originating from India, while BS 970 EN16 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, IS 1570 (Part 6) T55Si7Mo3 vs BS 970 EN16 is a 75.4% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a related material overall at 65%.

Frequently Compared With IS 1570 (Part 6) T55Si7Mo3:
GOST 5950 4H5MFS1 EN ISO 683-17 100Cr6 EN ISO 4957 1.2316 GOST 5950 4H5MFS DIN EN ISO 4957 1.2344 IS 1570 (Part 6) 133T3 GB/T 1299 3Cr2W8V IS 1570 (Part 6) 118T3 GOST 5950 3H2W8F DIN EN ISO 4957 1.2379 IS 1570 (Part 6) 103T3 GB/T 1299 4Cr5MoSiV
Match Breakdown
CHEMISTRY MATCH
75.4%
MECHANICAL MATCH
No shared data
OVERALL
65%
Specifications
Property IS 1570 (Part 6) T55Si7Mo3 BS 970 EN16
Standard IS 1570 (Part 6):1996 BS 970:1955
Category Tool & Die Steels Alloy Steel
C (%) 0.50-0.60 0.30-0.40
Si (%) 1.50-2.00 0.10-0.35
Mn (%) 0.80-1.00 1.30-1.80
Mo (%) 0.25-0.40 0.20-0.35
V (%) 0.12-0.20 (optional) Not specified
P (%) <=0.035 <=0.050
S (%) <=0.035 <=0.050
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property IS 1570 (Part 6) T55Si7Mo3 BS 970 EN16
Tensile Strength Not specified ≥695 MPa (45 tons/sq in, converted)
Yield Strength Not specified ≥525 MPa (34 tons/sq in, converted)
Elongation Not specified ≥22%
Hardness Not specified 201-255 HB
Condition Not specified Hardened and tempered R, ruling section 6 in (lowest-strength condition of the standard)
Typical Applications
IS 1570 (Part 6) T55Si7Mo3
Not documented
BS 970 EN16
High tensile bolts, studs, general engineering
Key Differences
Can IS 1570 (Part 6) T55Si7Mo3 Be Substituted With BS 970 EN16?
IS 1570 (Part 6) T55Si7Mo3 and BS 970 EN16 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
IS 1570 (Part 6) T55Si7Mo3
No active listings currently.
BS 970 EN16
Round Bar → (6 listings)
Diameter: 55–70 mm (2.17–2.76 in)
Length: 5400–6900 mm (212.6–271.65 in)
On M-EX Right Now
IS 1570 (Part 6) T55Si7Mo3
0 active listings and RFQs →
BS 970 EN16
6 active listings and RFQs →
Frequently Asked Questions
What is the difference between IS 1570 (Part 6) T55Si7Mo3 and BS 970 EN16?
Different category: IS 1570 (Part 6) T55Si7Mo3 is Tool & Die Steels, BS 970 EN16 is Alloy Steel. IS 1570 (Part 6) T55Si7Mo3 specifies V which is not specified for BS 970 EN16.
Can IS 1570 (Part 6) T55Si7Mo3 be substituted with BS 970 EN16?
IS 1570 (Part 6) T55Si7Mo3 and BS 970 EN16 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.