Post Stock Login Register

GB/T 699 45Mn vs IS 11169 (Part 1) 40Cr4

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

GB/T 699 45Mn (GB/T 699:2015) and IS 11169 (Part 1) 40Cr4 (IS 11169 (Part 1):2022) are both steel grades. GB/T 699 45Mn is classified under Carbon Steel, while IS 11169 (Part 1) 40Cr4 is classified under Alloy Steel — a different category, which is worth noting alongside the chemistry match below. GB/T 699 45Mn is typically used for hot-rolled or forged quality carbon structural steel bars up to 250 mm, while IS 11169 (Part 1) 40Cr4 is commonly 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). GB/T 699 45Mn is defined under Guobiao Standards (GB/T), originating from China, while IS 11169 (Part 1) 40Cr4 is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, GB/T 699 45Mn vs IS 11169 (Part 1) 40Cr4 is a 74.4% match. As per mechanical properties, the match is 50%. Combined, this makes them a related material overall at 65%.

Frequently Compared With GB/T 699 45Mn:
BS 970 (Part 1) 040A04 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 3) 045M10 BS 970 (Part 1) 055M15 BS 970 (Part 1) 060A32 BS 970 (Part 1) 060A45 BS 970 (Part 1) 040A10 BS 970 (Part 1) 040A12 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045M10
Match Breakdown
CHEMISTRY MATCH
74.4%
MECHANICAL MATCH
50%
OVERALL
65%
Specifications
Property GB/T 699 45Mn IS 11169 (Part 1) 40Cr4
Standard GB/T 699:2015 IS 11169 (Part 1):2022
Category Carbon Steel Alloy Steel
C (%) 0.42-0.50 0.35-0.45
Si (%) 0.17-0.37 0.10-0.35
Mn (%) 0.70-1.00 0.60-0.90
P (%) <=0.035 <=0.035
S (%) <=0.035 <=0.035
Cr (%) <=0.25 0.90-1.20
Ni (%) <=0.30 <=0.15
Cu (%) <=0.25 <=0.15
Mo (%) Not specified <=0.05
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property GB/T 699 45Mn IS 11169 (Part 1) 40Cr4
Tensile Strength >=620 MPa Not specified
Yield Strength >=375 MPa Not specified
Elongation >=15% Not specified
Hardness <=241 HB (as delivered, not heat treated) Not specified
Condition Normalized 25 mm sample blank, bars up to 80 mm; hardness for delivery state Not specified
Core Hardness (CH) Not specified >=50 HRC up to 16 mm
Tensile Strength, annealed (+AC) Not specified <=620 MPa (over 5 to 40 mm)
Typical Applications
GB/T 699 45Mn
Hot-rolled or forged quality carbon structural steel bars up to 250 mm
IS 11169 (Part 1) 40Cr4
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)
Key Differences
Can GB/T 699 45Mn Be Substituted With IS 11169 (Part 1) 40Cr4?
GB/T 699 45Mn and IS 11169 (Part 1) 40Cr4 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
GB/T 699 45Mn
0 active listings and RFQs →
IS 11169 (Part 1) 40Cr4
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between GB/T 699 45Mn and IS 11169 (Part 1) 40Cr4?
Different category: GB/T 699 45Mn is Carbon Steel, IS 11169 (Part 1) 40Cr4 is Alloy Steel. IS 11169 (Part 1) 40Cr4 specifies Mo which is not specified for GB/T 699 45Mn.
Can GB/T 699 45Mn be substituted with IS 11169 (Part 1) 40Cr4?
GB/T 699 45Mn and IS 11169 (Part 1) 40Cr4 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.