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AISI D2 KNL vs DIN EN ISO 4957 1.2379

Close Alternative — 84.3% match based on chemical composition and mechanical property overlap.

AISI D2 KNL (ASTM A681) and DIN EN ISO 4957 1.2379 (DIN EN ISO 4957:2018-11) are both steel grades. Both fall under the Tool & Die Steels category. AISI D2 KNL is typically used for blanking dies, forming dies, thread rolling dies, punches, shear blades, gauges, broaches, drawing dies, while DIN EN ISO 4957 1.2379 is commonly used for blanking dies, forming dies, thread rolling dies, punches, shear blades, gauges, broaches, drawing dies. AISI D2 KNL is defined under AISI, originating from United States, while DIN EN ISO 4957 1.2379 is defined under European Standard (EN), originating from Europe.

As per chemical composition, AISI D2 KNL vs DIN EN ISO 4957 1.2379 is a 76.5% match. As per mechanical properties, the match is 100%. Combined, this makes them a close alternative overall at 84.3%.

Frequently Compared With AISI D2 KNL:
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
Other Tool & Die Steels Grades to Compare With AISI D2 KNL:
IS 3748 103T3
Match Breakdown
CHEMISTRY MATCH
76.5%
MECHANICAL MATCH
100%
OVERALL
84.3%
Specifications
Property AISI D2 KNL DIN EN ISO 4957 1.2379
Standard ASTM A681 DIN EN ISO 4957:2018-11
Category Tool & Die Steels Tool & Die Steels
C (%) 1.40–1.60 1.50–1.60
Mn (%) ≤0.60 0.25–0.60
Si (%) ≤0.40 0.10–0.40
Cr (%) 11.00–13.00 11.00–13.00
Mo (%) 0.70–1.20 0.70–1.00
V (%) ≤1.00 0.80–1.10
S (%) ≤0.030 ≤0.030
P (%) ≤0.030 ≤0.030
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 DIN EN ISO 4957 1.2379
Hardness (annealed) ≤255 HB ≤255 HB
Hardness (hardened) 58–62 HRC 58–62 HRC
Compressive Strength 2600 MPa 2600 MPa
Typical Applications
AISI D2 KNL
Blanking dies, forming dies, thread rolling dies, punches, shear blades, gauges, broaches, drawing dies
DIN EN ISO 4957 1.2379
Blanking dies, forming dies, thread rolling dies, punches, shear blades, gauges, broaches, drawing dies
Can AISI D2 KNL Be Substituted With DIN EN ISO 4957 1.2379?
AISI D2 KNL and DIN EN ISO 4957 1.2379 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
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)
DIN EN ISO 4957 1.2379
Round Bar → (2 listings)
Diameter: 80–80 mm (3.15–3.15 in)
Length: 2800–3300 mm (110.24–129.92 in)
On M-EX Right Now
AISI D2 KNL
2 active listings and RFQs →
DIN EN ISO 4957 1.2379
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between AISI D2 KNL and DIN EN ISO 4957 1.2379?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can AISI D2 KNL be substituted with DIN EN ISO 4957 1.2379?
AISI D2 KNL and DIN EN ISO 4957 1.2379 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.