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

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

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

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