15Cr3 forging ingots
Low carbon chromium steel in the Indian designation, used for light case hardened parts.
Case Hardening Steel Forging Ingots
Case hardening steel ingots are low carbon alloys that are carburised after forging to give a hard surface over a tough core. They are the starting stock for large gear blanks, pinions and transmission shafts.
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.
15Cr3EN8DCr16MnCr520MnCr516MnCrB520MnCrB5SCM415SCM420SCM420HSCM435HSAE 8617SAE 8620SAE 8622SAE 8640EN351EN352EN353EN354EN35515CrNi616CrNi420CrNi6SAE 4320
Chromium case hardening grades
EN8DCr forging ingots
A chromium-modified EN8D listed in the steel grade chart. Confirm limits at enquiry.
Chrome manganese case hardening grades
16MnCr5 forging ingots
About 0.14–0.19% C, 1.0–1.3% Mn, 0.8–1.1% Cr. A standard gear and shaft steel.
20MnCr5 forging ingots
About 0.17–0.22% C, 1.1–1.4% Mn, 1.0–1.3% Cr. Gears, camshafts and transmission shafts.
16MnCrB5 forging ingots
The boron-treated 16MnCr5, for improved hardenability.
20MnCrB5 forging ingots
The boron-treated 20MnCr5, for improved hardenability.
SCM chromium-molybdenum case hardening grades (JIS)
SCM is the JIS G4053 designation for chromium-molybdenum steels. An H suffix means a guaranteed hardenability band.
SCM415 forging ingots
Low carbon Cr-Mo steel, about 0.13–0.18% C, for case hardened parts.
SCM420 forging ingots
About 0.18–0.23% C. Gears and shafts needing a hard case.
SCM420H forging ingots
SCM420 with a guaranteed hardenability band.
SCM435H forging ingots
About 0.33–0.38% C Cr-Mo steel with a hardenability band, for quenched and tempered parts.
Nickel-chromium-molybdenum case hardening grades
SAE 8617 forging ingots
About 0.15–0.20% C Ni-Cr-Mo case hardening steel.
SAE 8620 forging ingots
About 0.18–0.23% C. One of the most used case hardening grades for gears.
SAE 8622 forging ingots
About 0.20–0.25% C. Slightly higher core strength than 8620.
SAE 8640 forging ingots
About 0.38–0.43% C Ni-Cr-Mo steel, used through hardened.
EN351 forging ingots
BS 970 EN35x series Ni-Cr-Mo case hardening steel.
EN352 forging ingots
BS 970 EN35x series Ni-Cr-Mo case hardening steel.
EN353 forging ingots
BS 970 EN35x series case hardening steel, close to the SAE 8620 family. For an EN353 ingot manufacturer enquiry, send the size and standard.
EN354 forging ingots
BS 970 EN35x series Ni-Cr-Mo case hardening steel.
EN355 forging ingots
BS 970 EN35x series Ni-Cr-Mo case hardening steel.
15CrNi6 forging ingots
German chromium-nickel case hardening steel for gears and shafts.
16CrNi4 forging ingots
Chromium-nickel case hardening steel for heavily loaded parts.
20CrNi6 forging ingots
Chromium-nickel case hardening steel for gears and pinions.
SAE 4320 forging ingots
About 0.17–0.22% C Ni-Cr-Mo case hardening steel.
Other grade families
Plain Carbon Steel Forging IngotsCarbon Manganese Steel Forging IngotsThrough Hardened Alloy 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.