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EN ISO 4957 X155CrVMo12-1 vs GB/T 1299 Cr12Mo1V1

Close Alternative — 81.4% match based on chemical composition and mechanical property overlap.

EN ISO 4957 X155CrVMo12-1 (EN ISO 4957:2018) and GB/T 1299 Cr12Mo1V1 (GB/T 1299-2014) are both steel grades. Both fall under the Tool & Die Steels category. EN ISO 4957 X155CrVMo12-1 is typically used for blanking dies, forming dies, thread rolling dies, gauges, while GB/T 1299 Cr12Mo1V1 is commonly used for precision blanking dies, thread rolling dies, cold forming. EN ISO 4957 X155CrVMo12-1 is defined under European Standard (EN), originating from Europe, while GB/T 1299 Cr12Mo1V1 is defined under Guobiao Standards (GB/T), originating from China.

As per chemical composition, EN ISO 4957 X155CrVMo12-1 vs GB/T 1299 Cr12Mo1V1 is a 72.2% match. As per mechanical properties, the match is 100%. Combined, this makes them a close alternative overall at 81.4%.

Frequently Compared With EN ISO 4957 X155CrVMo12-1:
DIN EN ISO 4957 1.2344 EN ISO 683-17 100Cr6 EN ISO 4957 1.2316 GOST 5950 3H2W8F GOST 5950 4H5MFS DIN EN ISO 4957 1.2379 GB/T 1299 3Cr2W8V GOST 5950 4H5MFS1 GB/T 1299 4Cr5MoSiV GB/T 1299 4Cr5MoSiV1 AISI 52100 IS 1570 (Part 6) 103T3
Match Breakdown
CHEMISTRY MATCH
72.2%
MECHANICAL MATCH
100%
OVERALL
81.4%
Specifications
Property EN ISO 4957 X155CrVMo12-1 GB/T 1299 Cr12Mo1V1
Standard EN ISO 4957:2018 GB/T 1299-2014
Category Tool & Die Steels Tool & Die Steels
C (%) 1.55–1.65 1.45–1.70
Mn (%) 0.20–0.50 ≤0.40
Cr (%) 11.50–12.50 11.00–13.00
Mo (%) 0.60–0.80 0.40–0.60
V (%) 0.70–1.00 0.15–0.30
Si (%) ≤0.40 ≤0.40
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property EN ISO 4957 X155CrVMo12-1 GB/T 1299 Cr12Mo1V1
Hardness HRC (hardened) 58–62 58–62
Hardness HB (annealed) ≤255 ≤255
Wear Resistance Excellent Not specified
Typical Applications
EN ISO 4957 X155CrVMo12-1
Blanking dies, forming dies, thread rolling dies, gauges
GB/T 1299 Cr12Mo1V1
Precision blanking dies, thread rolling dies, cold forming
Can EN ISO 4957 X155CrVMo12-1 Be Substituted With GB/T 1299 Cr12Mo1V1?
EN ISO 4957 X155CrVMo12-1 and GB/T 1299 Cr12Mo1V1 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
EN ISO 4957 X155CrVMo12-1
Round Bar → (3 listings)
Diameter: 80–80 mm (3.15–3.15 in)
Length: 2500–3200 mm (98.43–125.98 in)
GB/T 1299 Cr12Mo1V1
Round Bar → (2 listings)
Diameter: 80–80 mm (3.15–3.15 in)
Length: 3100–3200 mm (122.05–125.98 in)
On M-EX Right Now
EN ISO 4957 X155CrVMo12-1
3 active listings and RFQs →
GB/T 1299 Cr12Mo1V1
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between EN ISO 4957 X155CrVMo12-1 and GB/T 1299 Cr12Mo1V1?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can EN ISO 4957 X155CrVMo12-1 be substituted with GB/T 1299 Cr12Mo1V1?
EN ISO 4957 X155CrVMo12-1 and GB/T 1299 Cr12Mo1V1 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.