Strong Match — 100% match
based on chemical composition and mechanical property overlap.
JIS G3506 SWRH77B (JIS G3506:2004) and JIS G3506 S75C (JIS G3506:2004) are both steel grades.
Both fall under the Carbon Steel category.
JIS G3506 SWRH77B is typically used for high-carbon hard-drawn steel wire rod (sw-c class, 0.80% c); used for hard-drawn steel wire, oil-tempered wire, prestressed concrete (pc) wire/strand, galvanized wire strands, wire rope, springs, tire bead wire, while JIS G3506 S75C is commonly used for springs, hand tools, chisels, punches.
JIS G3506 SWRH77B is defined under Japanese Industrial Standards (JIS), originating from Japan, while JIS G3506 S75C is defined under Japanese Industrial Standards (JIS), originating from Japan.
As per chemical composition, JIS G3506 SWRH77B vs JIS G3506 S75C is a 100% match.
Mechanical property data is not available for both grades, so this factor could not be scored.
Combined, this makes them a strong match overall at 100%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
JIS G3506 SWRH77B
JIS G3506 S75C
Tensile Strength
Not specified
≥750 MPa (annealed)
Hardness HRC
Not specified
58–63 (hardened)
Hardness HB
Not specified
≤229 (annealed)
Typical Applications
JIS G3506 SWRH77B
High-carbon hard-drawn steel wire rod (SW-C class, 0.80% C); used for hard-drawn steel wire, oil-tempered wire, prestressed concrete (PC) wire/strand, galvanized wire strands, wire rope, springs, tire bead wire
JIS G3506 S75C
Springs, hand tools, chisels, punches
Can JIS G3506 SWRH77B Be Substituted With JIS G3506 S75C?
JIS G3506 SWRH77B and JIS G3506 S75C overlap closely enough on chemistry and mechanical properties that JIS G3506 S75C is often considered as a substitute for JIS G3506 SWRH77B in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
What is the difference between JIS G3506 SWRH77B and JIS G3506 S75C?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can JIS G3506 SWRH77B be substituted with JIS G3506 S75C?
JIS G3506 SWRH77B and JIS G3506 S75C overlap closely enough on chemistry and mechanical properties that JIS G3506 S75C is often considered as a substitute for JIS G3506 SWRH77B in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.