SAE 1008 steel billets
Very low carbon, about 0.10% C maximum. Soft, ductile stock for forming and heading.
Plain Carbon Steel Billets
Plain carbon steels get their strength from carbon alone. They are the everyday forging and machining grades, from very low carbon stock for forming to medium and high carbon for shafts, gears and wear parts.
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.
SAE 1008SAE 1010SAE 1018SAE 1020SAE 1030SAE 1035SAE 1040SAE 1045SAE 105015C830C840C845C850C8C10C20C30C35C38C40C45C48C50C55C60C65CK35CK45EN2AEN3EN32BEN8EN8DEN9
SAE / AISI 10xx plain carbon grades
The last two digits of an SAE 10xx grade give the nominal carbon in hundredths of a percent.
SAE 1010 steel billets
Low carbon, about 0.08–0.13% C. General forming, welding and carburising stock.
SAE 1018 steel billets
Low carbon, about 0.15–0.20% C. A common machining and case hardening grade.
SAE 1020 steel billets
Low carbon, about 0.18–0.23% C. Pins, light shafts and welded forgings.
SAE 1030 steel billets
About 0.28–0.34% C. Forged parts needing moderate strength.
SAE 1035 steel billets
About 0.32–0.38% C. Forged and machined parts, normalised or quenched and tempered.
SAE 1040 steel billets
About 0.37–0.44% C. Shafts, studs and general engineering forgings.
SAE 1045 steel billets
About 0.43–0.50% C. A widely used medium carbon grade for shafts and gears.
SAE 1050 steel billets
About 0.48–0.55% C. Higher strength and wear resistance than 1045.
15C8 to 50C8 (IS 1570 carbon grades)
In the Indian IS 1570 system, the number is the nominal carbon in hundredths of a percent and 8 stands for roughly 0.8% manganese.
15C8 steel billets
About 0.15% C, 0.8% Mn. Low carbon, suited to case hardening.
30C8 steel billets
About 0.30% C, 0.8% Mn. Medium-low carbon forged parts.
40C8 steel billets
About 0.40% C, 0.8% Mn. Shafts, studs and levers.
45C8 steel billets
About 0.45% C, 0.8% Mn. Indian equivalent family of SAE 1045 and C45.
50C8 steel billets
About 0.50% C, 0.8% Mn. Heavier-duty shafts and wear parts.
C-series carbon grades
C-series names carry the nominal carbon content, as in the EN 10083 family of quenched and tempered steels.
C10 steel billets
Nominal 0.10% C. Low carbon case hardening stock.
C20 steel billets
Nominal 0.20% C. Low carbon parts and case hardened components.
C30 steel billets
Nominal 0.30% C. General forged parts.
C35 steel billets
Nominal 0.35% C. Shafts and general engineering parts.
C38 steel billets
Nominal 0.38% C. Medium carbon forged and machined parts.
C40 steel billets
Nominal 0.40% C. Shafts, axles and studs.
C45 steel billets
Nominal 0.45% C. The standard medium carbon steel, close to SAE 1045 and EN8.
C48 steel billets
Nominal 0.48% C. Medium-high carbon forgings.
C50 steel billets
Nominal 0.50% C. Higher strength shafts and gears.
C55 steel billets
Nominal 0.55% C. Wear parts and higher strength components.
C60 steel billets
Nominal 0.60% C. High carbon parts for wear resistance.
C65 steel billets
Nominal 0.65% C. High carbon grade for springs and wear parts after heat treatment.
CK35 steel billets
German designation: 0.35% C steel with restricted phosphorus and sulphur, now written C35E.
CK45 steel billets
German designation: 0.45% C steel with restricted phosphorus and sulphur, now written C45E.
EN series carbon grades (BS 970)
The EN series is the traditional British designation, still used widely in Indian forging and machining.
EN2A steel billets
Low carbon EN series grade for general engineering parts.
EN3 steel billets
Low carbon EN series grade, used for general engineering and case hardened parts.
EN32B steel billets
Low carbon EN series grade commonly used for case hardening.
EN8 steel billets
Medium carbon, about 0.36–0.44% C. One of the most used grades for shafts, studs and gears.
EN8D steel billets
A variant of the EN8 family. Order against the stated limits on the enquiry.
EN9 steel billets
Higher carbon, about 0.50–0.60% C. Heavier-duty shafts and wear parts.
Other grade families
Carbon Manganese Steel BilletsCase Hardening Steel BilletsThrough Hardened Alloy Steel BilletsASTM A182 Chrome Moly Pressure Grade BilletsSpring, Bearing and Special Steel BilletsStainless and Tool Steel Billets
See also steel billet specifications and the billet size chart.