JIS G4107 — Alloy steel bolting materials for high temperature service
JIS G4107 covers alloy steel bars for high-temperature bolting, designated SNB (SNB7, SNB16) — the Japanese counterpart of ASTM A193 B7 and B16.
JIS G4107 at a glance
| Standard | JIS G4107 |
|---|---|
| Issued by | Japanese Industrial Standards |
| Product form | Bolting |
| Grades on this site | 2 |
JIS G4107 grades and their ASTM equivalents
| JIS designation | Nearest ASTM / ASME grades | UNS | W.Nr |
|---|---|---|---|
| SCM440 / SNB7 (JIS G4107) | ASTM A193 B7, ASTM A193 B7M, ASTM A320 L7, ASTM A320 L7M, ASTM A194 Grade 7 | G41400 | 1.7225 |
| SNB16 (JIS G4107) | ASTM A193 B16 | K14072 | 1.7711 |
Equivalents are the nearest commonly cited grades. Chemistry, mechanical properties and testing differ between standards — compare them before substituting one for another.
FAQ
JIS G4107: common questions
What is the ASTM equivalent of JIS G4107 SCM440 / SNB7?
The nearest ASTM grades are ASTM A193 B7, ASTM A193 B7M, ASTM A320 L7, ASTM A320 L7M.
Does Teshi Group supply material to JIS G4107?
Teshi Group manufactures flanges, fittings, fasteners and valves, and supplies pipes and plates, to ASTM / ASME specifications and to equivalent EN, JIS, GB and IS standards on request, with EN 10204 3.1 certificates. Send your requirement to info@teshigroup.com.
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