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IS 1570 (Part 6) XT78W18Cr4V1 vs GOST 5950 4H5MFS

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

IS 1570 (Part 6) XT78W18Cr4V1 (IS 1570 (Part 6):1996) and GOST 5950 4H5MFS (GOST 5950-2000) are both steel grades. Both fall under the Tool & Die Steels category. IS 1570 (Part 6) XT78W18Cr4V1 is defined under Bureau of Indian Standards (IS) (India).

As per chemical composition, IS 1570 (Part 6) XT78W18Cr4V1 vs GOST 5950 4H5MFS is a 42.2% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With IS 1570 (Part 6) XT78W18Cr4V1:
DIN EN ISO 4957 1.2379 IS 1570 (Part 6) 103T3 GB/T 1299 3Cr2W8V EN ISO 683-17 100Cr6 IS 1570 (Part 6) 118T3 GOST 5950 3H2W8F DIN EN ISO 4957 1.2344 IS 1570 (Part 6) 133T3 GB/T 1299 4Cr5MoSiV GOST 5950 4H5MFS1 EN ISO 4957 1.2316 GB/T 1299 4Cr5MoSiV1
Match Breakdown
CHEMISTRY MATCH
42.2%
MECHANICAL MATCH
No shared data
OVERALL
35%
Specifications
Property IS 1570 (Part 6) XT78W18Cr4V1 GOST 5950 4H5MFS
Standard IS 1570 (Part 6):1996 GOST 5950-2000
Category Tool & Die Steels Tool & Die Steels
Cr (%) 3.50-4.50 4.5-5.5
V (%) 0.90-1.20 0.3-0.6
W (%) 17.20-18.70 Not specified
Co (%) <=1.00 Not specified
Mo (%) <=0.70 1.2-1.6
Si (%) <=0.50 0.8-1.2
Mn (%) <=0.40 Not specified
P (%) <=0.030 Not specified
S (%) <=0.030 Not specified
C (%) 0.73-0.83 0.35-0.45
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property IS 1570 (Part 6) XT78W18Cr4V1 GOST 5950 4H5MFS
Tensile Strength Not specified 1350-1650 MPa
Yield Strength Not specified 1150 MPa min
Elongation Not specified 9% min
Hardness Not specified 44-50 HRC
Typical Applications
IS 1570 (Part 6) XT78W18Cr4V1
Not documented
GOST 5950 4H5MFS
Used for die casting dies, forging tools, extrusion dies, punches, and hot shear blades.
Key Differences
Can IS 1570 (Part 6) XT78W18Cr4V1 Be Substituted With GOST 5950 4H5MFS?
IS 1570 (Part 6) XT78W18Cr4V1 and GOST 5950 4H5MFS 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
IS 1570 (Part 6) XT78W18Cr4V1
No active listings currently.
GOST 5950 4H5MFS
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
IS 1570 (Part 6) XT78W18Cr4V1
0 active listings and RFQs →
GOST 5950 4H5MFS
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between IS 1570 (Part 6) XT78W18Cr4V1 and GOST 5950 4H5MFS?
IS 1570 (Part 6) XT78W18Cr4V1 specifies W, Co, Mn, P which are not specified for GOST 5950 4H5MFS.
Can IS 1570 (Part 6) XT78W18Cr4V1 be substituted with GOST 5950 4H5MFS?
IS 1570 (Part 6) XT78W18Cr4V1 and GOST 5950 4H5MFS 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.