40Cr4 forging ingots
About 0.40% C with about 1% Cr. Quenched and tempered shafts and bolts.
Through Hardened Alloy Steel Forging Ingots
Through hardened steels are quenched and tempered to give strength and toughness across the whole section. Heavy forged shafts, rotors, crankshafts and oil field parts start from these forging ingots.
Supplied as square, fluted and round forging ingots, M1.5 to M22 (1,450 to 23,500 kg with hot top), vacuum degassed and bottom poured. Send the grade, standard, ingot mark and shape for a quotation. Chemistry is certified on the heat test certificate.
40Cr441Cr437Cr4EN18EN18CEN18D25CrMo442CrMo4SAE 4130SAE 4135SAE 4140SAE 4142SAE 4150EN19EN19CSAE 4340EN24EN16EN16D
Chromium through hardening grades
41Cr4 forging ingots
About 0.38–0.45% C with about 1% Cr. Close to EN18 and SAE 5140.
37Cr4 forging ingots
About 0.37% C with about 1% Cr. Quenched and tempered parts.
EN18 forging ingots
BS 970 chromium steel, close to 41Cr4 and SAE 5140.
EN18C forging ingots
A variant of EN18. Order against the stated limits.
EN18D forging ingots
A variant of EN18. Order against the stated limits.
Chromium-molybdenum grades
25CrMo4 forging ingots
Chrome-moly steel close to SAE 4130, used for pressure parts and welded forgings.
42CrMo4 forging ingots
The EN 10083 designation of the 4140 family. Widely specified for export orders.
SAE 4130 forging ingots
About 0.28–0.33% C chrome-moly steel with good weldability.
SAE 4135 forging ingots
About 0.33–0.38% C chrome-moly steel.
SAE 4140 forging ingots
About 0.38–0.43% C chrome-moly steel. One of the most traded alloy grades.
SAE 4142 forging ingots
About 0.40–0.45% C chrome-moly steel, slightly stronger than 4140.
SAE 4150 forging ingots
About 0.48–0.53% C chrome-moly steel for higher strength and wear.
EN19 forging ingots
BS 970 chrome-moly steel, close to SAE 4140 and 42CrMo4.
EN19C forging ingots
A variant of EN19. Order against the stated limits.
Nickel and manganese-molybdenum grades
SAE 4340 forging ingots
About 0.38–0.43% C Ni-Cr-Mo steel with deep hardenability and toughness.
EN24 forging ingots
BS 970 Ni-Cr-Mo steel, close to SAE 4340. For heavy shafts and highly stressed parts.
EN16 forging ingots
BS 970 manganese-molybdenum steel for quenched and tempered shafts and gears.
EN16D forging ingots
A variant of EN16. Order against the stated limits.
Other grade families
Plain Carbon Steel Forging IngotsCarbon Manganese Steel Forging IngotsCase Hardening Steel Forging IngotsASTM A182 Chrome Moly Forging IngotsSpring and Bearing Steel Forging IngotsStainless and Tool Steel Forging Ingots
See also forging ingot specifications and the forging ingot size chart.