Seamless Steel Tube Information: Chemical Composition and Mechanical Properties of S35C Seamless Steel Tube
Hit：432026-05-11 09:31:13
Seamless Steel Tube Information: Chemical Composition and Mechanical Properties of S35C Seamless Steel Tube
S35C is a high-quality carbon structural steel under the Japanese JIS G4051 standard, with a chemical composition range of:
Carbon (C): 0.32% to 0.38%
Silicon (Si): 0.15% to 0.35%
Manganese (Mn): 0.60% to 0.90%
Phosphorus (P): ≤ 0.030%
Sulfur (S): ≤ 0.035%
Chromium (Cr): ≤ 0.2%
Nickel (Ni): ≤ 0.2%
Copper (Cu): ≤ 0.3%
And Ni+Cr ≤ 0.35%
This component design ensures that the material has good strength, plasticity, and processability, making it suitable for manufacturing mechanical structural components that require heat treatment and cutting processing.
mechanical properties
The typical mechanical properties of S35C in the untreated state are:
Tensile strength σ b: ≥ 530 MPa
Yield strength σ s: ≥ 315 MPa
Elongation rate δ 5: ≥ 20%
Shrinkage rate of cross-section: ≥ 45%
Impact energy Akv: ≥ 55 J
Hardness: ≤ 197 HB without heat treatment
After heat treatment, the performance is further improved: S35C corresponds to Chinese GB/T 699 standard 35 # steel, which is also equivalent to American ASTM/AISI 1035, German DIN Ck35 (1.1181) and other grades. It is widely used in the manufacture of seamless steel pipes, shafts, connecting rods, crankshafts and other components that can withstand moderate loads.
http://www.lchzgg.com
