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GB/T 1299 4Cr5MoSiV1 vs EN ISO 683-17 100Cr6

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

GB/T 1299 4Cr5MoSiV1 (GB/T 1299-2014) and EN ISO 683-17 100Cr6 (EN ISO 683-17:2014) are both steel grades. Both fall under the Tool & Die Steels category. GB/T 1299 4Cr5MoSiV1 is typically used for die casting dies, forging dies, extrusion tools, while EN ISO 683-17 100Cr6 is commonly used for rolling element bearings, precision components, cold work tooling. GB/T 1299 4Cr5MoSiV1 is defined under Guobiao Standards (GB/T), originating from China, while EN ISO 683-17 100Cr6 is defined under European Standard (EN), originating from Europe.

As per chemical composition, GB/T 1299 4Cr5MoSiV1 vs EN ISO 683-17 100Cr6 is a 63.1% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With GB/T 1299 4Cr5MoSiV1:
GB/T 1299 4Cr5MoSiV GOST 5950 4H5MFS DIN EN ISO 4957 1.2344 GOST 5950 4H5MFS1 AISI 52100 IS 1570 (Part 6) 70T3 IS 1570 (Part 6) 103T3 IS 3748 103T3 EN ISO 4957 1.2316 IS 1570 (Part 6) 55T8 IS 1570 (Part 6) 133T3 IS 1570 (Part 6) 50T8
Match Breakdown
CHEMISTRY MATCH
63.1%
MECHANICAL MATCH
0%
OVERALL
35%
Specifications
Property GB/T 1299 4Cr5MoSiV1 EN ISO 683-17 100Cr6
Standard GB/T 1299-2014 EN ISO 683-17:2014
Category Tool & Die Steels Tool & Die Steels
C (%) 0.32–0.45 0.93–1.05
Si (%) 0.80–1.20 0.15–0.35
Mn (%) 0.20–0.50 0.25–0.45
Cr (%) 4.75–5.50 1.35–1.65
Mo (%) 1.20–1.75 Not specified
V (%) 0.80–1.20 Not specified
S (%) Not specified ≤0.025
P (%) Not specified ≤0.025
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 4Cr5MoSiV1 EN ISO 683-17 100Cr6
Hardness HRC (hardened) 42–54 Not specified
Hardness HB (annealed) ≤235 Not specified
Tensile Strength Not specified ≥620 MPa (annealed)
Hardness HRC Not specified 60–66 (hardened)
Hardness HB Not specified 179–217 (annealed)
Typical Applications
GB/T 1299 4Cr5MoSiV1
Die casting dies, forging dies, extrusion tools
EN ISO 683-17 100Cr6
Rolling element bearings, precision components, cold work tooling
Key Differences
Can GB/T 1299 4Cr5MoSiV1 Be Substituted With EN ISO 683-17 100Cr6?
GB/T 1299 4Cr5MoSiV1 and EN ISO 683-17 100Cr6 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
GB/T 1299 4Cr5MoSiV1
Round Bar → (2 listings)
Diameter: 80–80 mm (3.15–3.15 in)
Length: 2700–4100 mm (106.3–161.42 in)
EN ISO 683-17 100Cr6
Round Bar → (18 listings)
Diameter: 80–80 mm (3.15–3.15 in)
Length: 3000–6500 mm (118.11–255.91 in)
On M-EX Right Now
GB/T 1299 4Cr5MoSiV1
2 active listings and RFQs →
EN ISO 683-17 100Cr6
18 active listings and RFQs →
Frequently Asked Questions
What is the difference between GB/T 1299 4Cr5MoSiV1 and EN ISO 683-17 100Cr6?
GB/T 1299 4Cr5MoSiV1 specifies Mo, V which are not specified for EN ISO 683-17 100Cr6. EN ISO 683-17 100Cr6 specifies S, P which are not specified for GB/T 1299 4Cr5MoSiV1.
Can GB/T 1299 4Cr5MoSiV1 be substituted with EN ISO 683-17 100Cr6?
GB/T 1299 4Cr5MoSiV1 and EN ISO 683-17 100Cr6 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.