20Mn2 steel billets
About 0.20% C with about 1.5% Mn. Low carbon manganese steel for case hardened and forged parts.
Carbon manganese steels add roughly 1.3 to 1.7% manganese to a plain carbon base. The extra manganese raises hardenability and strength without alloy additions, so they are used for forgings that are quenched and tempered.
Supplied as continuous cast billets and blooms, 100 × 100 to 250 × 250 mm and 200 mm round, in lengths up to 12 m. Send the grade, standard, section and length for a quotation. Chemistry is certified on the heat test certificate.
In IS 1570 the Mn2 in a name means about 1.5% manganese.
About 0.20% C with about 1.5% Mn. Low carbon manganese steel for case hardened and forged parts.
About 0.27% C with about 1.5% Mn. Medium-low carbon, quench and temper grade.
About 0.37% C with about 1.5% Mn. Medium carbon manganese steel for shafts and axles.
BS 970 manganese steel with higher hardenability than plain carbon grades.
A variant of EN15. Order against the stated limits.
A variant of EN15. Order against the stated limits.
About 0.36–0.44% C and 1.35–1.65% Mn. Used for forged shafts, axles and gears.
The boron-treated version of SAE 1541, for deeper hardening.
See also steel billet specifications and the billet size chart.