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IS 11169 (Part 1) 30Mo1BT vs BS 970 (Part 1) 185H40

Related Material — 64.6% match based on chemical composition and mechanical property overlap.

IS 11169 (Part 1) 30Mo1BT (IS 11169 (Part 1):2022) and BS 970 (Part 1) 185H40 (BS 970 (Part 1):1983) are both steel grades. Both fall under the Alloy Steel category. IS 11169 (Part 1) 30Mo1BT is typically used for cold heading and cold extrusion of parts that are quenched and tempered; the standard covers bars, wire rods and wires of 2 to 100 mm (clause 1.1, annex c), while BS 970 (Part 1) 185H40 is commonly used for through hardening steel for mechanical and allied engineering purposes (table 6 gives composition only; see the hardenability tables).. IS 11169 (Part 1) 30Mo1BT is defined under Bureau of Indian Standards (IS), originating from India, while BS 970 (Part 1) 185H40 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, IS 11169 (Part 1) 30Mo1BT vs BS 970 (Part 1) 185H40 is a 64.6% 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 64.6%.

Frequently Compared With IS 11169 (Part 1) 30Mo1BT:
IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 4) 10Mo6 UNI 11234 100Cr6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 07Cr4Mo6 NF A35-565 100C6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 10Cr9Mo10 IS 1570 (Part 7) 10Mo6H IS 11169 (Part 1) 10Ni5Cr4
Match Breakdown
CHEMISTRY MATCH
64.6%
MECHANICAL MATCH
No shared data
OVERALL
64.6%
Specifications
Property IS 11169 (Part 1) 30Mo1BT BS 970 (Part 1) 185H40
Standard IS 11169 (Part 1):2022 BS 970 (Part 1):1983
Category Alloy Steel Alloy Steel
B (%) 0.0008-0.005 0.0005-0.005
C (%) 0.28-0.32 0.36-0.43
Cr (%) <=0.30 0.15-0.35
Cu (%) <=0.25 Not specified
Mn (%) 0.80-1.00 1.25-1.75
Mo (%) 0.08-0.12 0.08-0.18
P (%) <=0.025 <=0.035
S (%) <=0.025 0.03-0.06
Si (%) <=0.30 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 IS 11169 (Part 1) 30Mo1BT BS 970 (Part 1) 185H40
Core Hardness (CH) >=45 HRC up to 18 mm Not specified
Tensile Strength, annealed (+AC) <=530 MPa (over 5 to 40 mm) Not specified
Typical Applications
IS 11169 (Part 1) 30Mo1BT
Cold heading and cold extrusion of parts that are quenched and tempered; the standard covers bars, wire rods and wires of 2 to 100 mm (clause 1.1, Annex C)
BS 970 (Part 1) 185H40
Through hardening steel for mechanical and allied engineering purposes (Table 6 gives composition only; see the hardenability tables).
Key Differences
Can IS 11169 (Part 1) 30Mo1BT Be Substituted With BS 970 (Part 1) 185H40?
IS 11169 (Part 1) 30Mo1BT and BS 970 (Part 1) 185H40 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.
On M-EX Right Now
IS 11169 (Part 1) 30Mo1BT
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BS 970 (Part 1) 185H40
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Frequently Asked Questions
What is the difference between IS 11169 (Part 1) 30Mo1BT and BS 970 (Part 1) 185H40?
IS 11169 (Part 1) 30Mo1BT specifies Cu, Si which are not specified for BS 970 (Part 1) 185H40.
Can IS 11169 (Part 1) 30Mo1BT be substituted with BS 970 (Part 1) 185H40?
IS 11169 (Part 1) 30Mo1BT and BS 970 (Part 1) 185H40 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.