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EN ISO 4957 X30WCrV9-3 vs GB/T 1299 4Cr5MoSiV

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

EN ISO 4957 X30WCrV9-3 (EN ISO 4957:2018) and GB/T 1299 4Cr5MoSiV (GB/T 1299-2014) are both steel grades. Both fall under the Tool & Die Steels category. EN ISO 4957 X30WCrV9-3 is typically used for hot extrusion dies, hot forging dies for non-ferrous metals, while GB/T 1299 4Cr5MoSiV is commonly used for die casting dies, extrusion tooling. EN ISO 4957 X30WCrV9-3 is defined under European Standard (EN), originating from Europe, while GB/T 1299 4Cr5MoSiV is defined under Guobiao Standards (GB/T), originating from China.

As per chemical composition, EN ISO 4957 X30WCrV9-3 vs GB/T 1299 4Cr5MoSiV is a 61.6% 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 X30WCrV9-3:
AISI 52100 DIN EN ISO 4957 1.2344 EN ISO 683-17 100Cr6 GB/T 1299 4Cr5MoSiV1 GOST 5950 4H5MFS1 DIN EN ISO 4957 1.2379 GOST 5950 3H2W8F EN ISO 4957 1.2316 GOST 5950 4H5MFS GB/T 1299 3Cr2W8V IS 1570 (Part 6) 103T3
Other Tool & Die Steels Grades to Compare With EN ISO 4957 X30WCrV9-3:
IS 3748 103T3
Match Breakdown
CHEMISTRY MATCH
61.6%
MECHANICAL MATCH
0%
OVERALL
35%
Specifications
Property EN ISO 4957 X30WCrV9-3 GB/T 1299 4Cr5MoSiV
Standard EN ISO 4957:2018 GB/T 1299-2014
Category Tool & Die Steels Tool & Die Steels
C (%) 0.26–0.36 0.32–0.45
Si (%) 0.15–0.50 0.80–1.20
Mn (%) 0.15–0.40 0.20–0.50
Cr (%) 2.50–3.50 4.75–5.50
W (%) 8.50–10.00 Not specified
V (%) 0.30–0.60 0.30–0.60
Mo (%) Not specified 1.10–1.60
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 X30WCrV9-3 GB/T 1299 4Cr5MoSiV
Hardness HRC (hardened) 38–52 40–54
Hardness HB (annealed) ≤229 ≤235
Typical Applications
EN ISO 4957 X30WCrV9-3
Hot extrusion dies, hot forging dies for non-ferrous metals
GB/T 1299 4Cr5MoSiV
Die casting dies, extrusion tooling
Key Differences
Can EN ISO 4957 X30WCrV9-3 Be Substituted With GB/T 1299 4Cr5MoSiV?
EN ISO 4957 X30WCrV9-3 and GB/T 1299 4Cr5MoSiV 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 X30WCrV9-3
Round Bar → (2 listings)
Diameter: 80–80 mm (3.15–3.15 in)
Length: 2800–3600 mm (110.24–141.73 in)
GB/T 1299 4Cr5MoSiV
Round Bar → (2 listings)
Diameter: 80–80 mm (3.15–3.15 in)
Length: 2500–2700 mm (98.43–106.3 in)
On M-EX Right Now
EN ISO 4957 X30WCrV9-3
2 active listings and RFQs →
GB/T 1299 4Cr5MoSiV
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between EN ISO 4957 X30WCrV9-3 and GB/T 1299 4Cr5MoSiV?
EN ISO 4957 X30WCrV9-3 specifies W which is not specified for GB/T 1299 4Cr5MoSiV. GB/T 1299 4Cr5MoSiV specifies Mo which is not specified for EN ISO 4957 X30WCrV9-3.
Can EN ISO 4957 X30WCrV9-3 be substituted with GB/T 1299 4Cr5MoSiV?
EN ISO 4957 X30WCrV9-3 and GB/T 1299 4Cr5MoSiV 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.