SMC45 also know as S45C .  An unalloyed carbon mechanical strictural steel. SM45C is belongs to KS D3752- 1986 Steel garde stanard.  Otai special steel is china supplier and stockholders of SM45C carbon steel in round bar, plate, flat bar, square bar, hexagonal bar. SM45C also can make to seamless steel pipe, welding steel pipe. SM45C can be hot rolled, forged, forging, cold drawn. cold rolled.

steel round bar Product-pic-2_2_

It equivalent with aisi 1045 steel, WN-r 1.1191, JIS S45C G4051, DIN CK45, GB 45#. BS 970 080M40, EN 10083 EN8 steel.

Chemical composition Compare as fllow table:

ASTM A29/29M C(%) Si(%) Mn(%) P(%) S
1045 0.43～0.50 / 0.60～0.90 ≤0.040 ≤0.050
DIN W-Nr C Si Mn P S
1.1191/CK45 0.42～0.50  ≤0.40 0.50～0.80 ≤0.035 ≤0.035
GB/T C Si Mn P S
45 0.42～0.50 0.17～0.37 0.50～0.80 ≤0.035 ≤0.035
BS C Si Mn P S
080M46 0.42～0.50 ≤0.40 0.50～0.80 ≤0.035 ≤0.035
JIS C Si Mn P S
S45C 0.42～0.48 0.15～0.35 0.60～0.90 ≤0.030 ≤0.030
KS C Si Mn P S
SM45C 0.42～0.48 0.15～0.35 0.60～0.90 ≤0.030 ≤0.030

SM45C steel Supply Form and Size:

Round bar:  diameter Ø5mm to 3000mm

Plate: Thickness 2mm to 1400mm x Width 100mm to 2300mm x Length

Hexagonal: HEX 5mm to 105mm

We supply cold drawn, hot rolled, forged, cold rolled SM45C steel material

Forging of SMC45 medium carbon steel

  • Forging at 1050°C to 850°C

Normalizing

  • Slowly Heat SM45C steel to 820 ~ 870°C, then cool in air

 Annealing

Heat to 810 °C for SM45C carbon steel annealing.

Quenching

At  820 ~ 870°C , Quenching SM45C steel in water cooling

Tempering

After SM45C steel Quenching,  heat to 550 ~ 650  °C.

Delivery Condition

As customers requirement, provide normalized; annealing; Quenching+Tempering

Machanical Properties and physical property of SM45C

  •   7.85 kg/m3 , Density
  • mechanical properties:  ≥|σb/MPa:    570；—；690;  ≥|σs/MPa:    345；—；490; ≥|δ(％):    20；—；17
  • Hardness:

SM45C steel Hardness

Normalized , 167～229 HBS;

Annealing, 137～170 HBS；

Tempering, 201～269 HBS;

Application  of SM45C carbon steel

SM45C medium carbon steel is widely used in Optical axis, ladder shaft, screw nut, sleeve nut, muff, turn buckle, sleeve, hollow shaft and crank shaft, Mold parts,Die set, mould base structural etc.

Contact us now, free sample waiting for you!

Tel: 0086-769-33232622
Fax: 0086-769-88705839
Email (English): jack@otaisteel.com

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