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AISI D2 KNL vs IS 1570 (Part 7) 12Cr9Mo10H

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

AISI D2 KNL (ASTM A681) and IS 1570 (Part 7) 12Cr9Mo10H (IS 1570 (Part 7):1992) are both steel grades. AISI D2 KNL is classified under Tool & Die Steels, while IS 1570 (Part 7) 12Cr9Mo10H is classified under Alloy Steel — a different category, which is worth noting alongside the chemistry match below. AISI D2 KNL is typically used for blanking dies, forming dies, thread rolling dies, punches, shear blades, gauges, broaches, drawing dies, while IS 1570 (Part 7) 12Cr9Mo10H is commonly used for boilers, pressure vessels, steam turbines, steam and water piping and other power plant equipment working at elevated temperature. AISI D2 KNL is defined under AISI, originating from United States, while IS 1570 (Part 7) 12Cr9Mo10H is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, AISI D2 KNL vs IS 1570 (Part 7) 12Cr9Mo10H is a 67.8% 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 AISI D2 KNL:
DIN EN ISO 4957 1.2379 EN ISO 683-17 100Cr6 GB/T 1299 3Cr2W8V DIN EN ISO 4957 1.2344 EN ISO 4957 1.2316 GB/T 1299 4Cr5MoSiV GB/T 1299 4Cr5MoSiV1 GOST 5950 4H5MFS GOST 5950 3H2W8F GOST 5950 4H5MFS1 AISI 52100 IS 1570 (Part 6) 103T3
Match Breakdown
CHEMISTRY MATCH
67.8%
MECHANICAL MATCH
No shared data
OVERALL
65%
Specifications
Property AISI D2 KNL IS 1570 (Part 7) 12Cr9Mo10H
Standard ASTM A681 IS 1570 (Part 7):1992
Category Tool & Die Steels Alloy Steel
C (%) 1.40–1.60 0.08-0.15
Mn (%) ≤0.60 0.30-0.70
Si (%) ≤0.40 0.10-0.50
Cr (%) 11.00–13.00 1.90-2.60
Mo (%) 0.70–1.20 0.90-1.15
V (%) ≤1.00 Not specified
S (%) ≤0.030 <=0.040
P (%) ≤0.030 <=0.040
Al (metallic) (%) Not specified <=0.02
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property AISI D2 KNL IS 1570 (Part 7) 12Cr9Mo10H
Hardness (annealed) ≤255 HB Not specified
Hardness (hardened) 58–62 HRC Not specified
Compressive Strength 2600 MPa Not specified
Tensile Strength Not specified 410-560 MPa
Yield Strength Not specified >=135 MPa (0.2 % proof stress)
Condition Not specified Pipes, A, thickness - (first row of Table 3)
Typical Applications
AISI D2 KNL
Blanking dies, forming dies, thread rolling dies, punches, shear blades, gauges, broaches, drawing dies
IS 1570 (Part 7) 12Cr9Mo10H
Boilers, pressure vessels, steam turbines, steam and water piping and other power plant equipment working at elevated temperature
Key Differences
Can AISI D2 KNL Be Substituted With IS 1570 (Part 7) 12Cr9Mo10H?
AISI D2 KNL and IS 1570 (Part 7) 12Cr9Mo10H 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
AISI D2 KNL
Round Bar → (2 listings)
Diameter: 80–80 mm (3.15–3.15 in)
Length: 2500–3600 mm (98.43–141.73 in)
IS 1570 (Part 7) 12Cr9Mo10H
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On M-EX Right Now
AISI D2 KNL
2 active listings and RFQs →
IS 1570 (Part 7) 12Cr9Mo10H
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Frequently Asked Questions
What is the difference between AISI D2 KNL and IS 1570 (Part 7) 12Cr9Mo10H?
Different category: AISI D2 KNL is Tool & Die Steels, IS 1570 (Part 7) 12Cr9Mo10H is Alloy Steel. AISI D2 KNL specifies V which is not specified for IS 1570 (Part 7) 12Cr9Mo10H. IS 1570 (Part 7) 12Cr9Mo10H specifies Al (metallic) which is not specified for AISI D2 KNL.
Can AISI D2 KNL be substituted with IS 1570 (Part 7) 12Cr9Mo10H?
AISI D2 KNL and IS 1570 (Part 7) 12Cr9Mo10H 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.