JIS G4105 is a Japanese Industrial Standard specifies chromium molybdenum steels, mainly for machine structural use. And it’s manufactured by hot forming, such hot rolled and forging, ordinarily used after further process of forging, cutting and heat treatment.
There are 10 classes or steel grades in this JIS G4105 specifications: SCM 415, SCM 418, SCM 420, SCM 421, SCM 430, SCM 432, SCM 435, SCM 440, SCM 445, SCM 822.
SCM440 Plate, JIS 4105 Alloy Steel – No. 1 Stockist in China
JIS 4105 / JIS 4053 SCM440 plate is medium carbon chromium molybdenum alloy steel. Otai keeps over 1000 tons SCM440 plate for fast shipment.
ASTM 4118 Steel | SCM420 | 18CrMo4 | 1.7243
ASTM A29 4118 steel is one popular alloy steel used as engineering steel. There are steel equivalent of aisi 4118 steel, like JIS SCM420, DIN 18CrMo4 steel or 1.7243 steel.
AISI 4130 Steel | 25CrMo4 | 1.7218 | 708A25 | SCM430
AISI 4130 steel is a medium carbon, low alloy steel in ASTM A29 standard. ASTM 4140 steel is also commonly referred to as a chromoly steel, or chrome moly steel.
AISI 4140 Steel Bar | 1.7225 | 42CrMo4 | SCM440
AISI 4140 steel is a chromium molybdenum alloy steel which is widely used as tool steel in industry. where greater toughness and wear resistance is needed over lower carbon grades.
