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EN ISO 4957 X40CrMoV5-1 vs GB/T 1299 3Cr2W8V

Minimal Match — 35% match based on chemical composition and mechanical property overlap.

EN ISO 4957 X40CrMoV5-1 (EN ISO 4957:2018) and GB/T 1299 3Cr2W8V (GB/T 1299-2014) are both steel grades. Both fall under the Tool & Die Steels category. EN ISO 4957 X40CrMoV5-1 is typically used for die casting dies, extrusion dies, forging dies, hot shear blades, while GB/T 1299 3Cr2W8V is commonly used for used for hot forging dies, extrusion dies, die-casting molds, hot punches, and hot shear blades.. EN ISO 4957 X40CrMoV5-1 is defined under European Standard (EN), originating from Europe, while GB/T 1299 3Cr2W8V is defined under Guobiao Standards (GB/T), originating from China.

As per chemical composition, EN ISO 4957 X40CrMoV5-1 vs GB/T 1299 3Cr2W8V is a 56.2% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With EN ISO 4957 X40CrMoV5-1:
GB/T 1299 4Cr5MoSiV GB/T 1299 4Cr5MoSiV1 DIN EN ISO 4957 1.2344 EN ISO 683-17 100Cr6 GOST 5950 4H5MFS1 EN ISO 4957 1.2316 DIN EN ISO 4957 1.2379 GOST 5950 3H2W8F GOST 5950 4H5MFS AISI 52100 IS 1570 (Part 6) 103T3 IS 3748 103T3
Match Breakdown
CHEMISTRY MATCH
56.2%
MECHANICAL MATCH
0%
OVERALL
35%
Specifications
Property EN ISO 4957 X40CrMoV5-1 GB/T 1299 3Cr2W8V
Standard EN ISO 4957:2018 GB/T 1299-2014
Category Tool & Die Steels Tool & Die Steels
C (%) 0.35–0.42 0.30-0.40
Si (%) 0.80–1.20 0.20-0.40
Mn (%) 0.30–0.50 0.20-0.50
Cr (%) 4.75–5.50 2.20-2.70
Mo (%) 1.20–1.50 Not specified
V (%) 0.85–1.15 0.20-0.50
W (%) Not specified 7.50-9.00
P (%) Not specified 0.030 max
S (%) Not specified 0.030 max
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 X40CrMoV5-1 GB/T 1299 3Cr2W8V
Hardness HRC (hardened) 42–54 Not specified
Hardness HB (annealed) ≤235 Not specified
Hot Strength Excellent to 600°C Not specified
Tensile Strength Not specified 1180-1380 MPa
Yield Strength Not specified 980-1180 MPa
Elongation Not specified 10-14%
Hardness Not specified 48-54 HRC
Typical Applications
EN ISO 4957 X40CrMoV5-1
Die casting dies, extrusion dies, forging dies, hot shear blades
GB/T 1299 3Cr2W8V
Used for hot forging dies, extrusion dies, die-casting molds, hot punches, and hot shear blades.
Key Differences
Can EN ISO 4957 X40CrMoV5-1 Be Substituted With GB/T 1299 3Cr2W8V?
EN ISO 4957 X40CrMoV5-1 and GB/T 1299 3Cr2W8V 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
EN ISO 4957 X40CrMoV5-1
Round Bar → (3 listings)
Diameter: 80–80 mm (3.15–3.15 in)
Length: 2600–4800 mm (102.36–188.98 in)
GB/T 1299 3Cr2W8V
Round Bar → (2 listings)
Diameter: 80–80 mm (3.15–3.15 in)
Length: 2800–2900 mm (110.24–114.17 in)
On M-EX Right Now
EN ISO 4957 X40CrMoV5-1
3 active listings and RFQs →
GB/T 1299 3Cr2W8V
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between EN ISO 4957 X40CrMoV5-1 and GB/T 1299 3Cr2W8V?
EN ISO 4957 X40CrMoV5-1 specifies Mo which is not specified for GB/T 1299 3Cr2W8V. GB/T 1299 3Cr2W8V specifies W, P, S which are not specified for EN ISO 4957 X40CrMoV5-1.
Can EN ISO 4957 X40CrMoV5-1 be substituted with GB/T 1299 3Cr2W8V?
EN ISO 4957 X40CrMoV5-1 and GB/T 1299 3Cr2W8V 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.