30CrMnSi seamless steel pipe

30CrMnSi seamless steel pipe is a grade of alloy structural steel stipulated by Chinese national standards.

30CrMnSi seamless steel pipe has good processability, small processing deformation, and quite good fatigue resistance.

30CrMnSi seamless steel pipe chemical composition:
C: 0.27～0.34
Si: 0.90～1.20
Mn: 0.80～1.10
Cr: 0.80～1.10

Mechanical properties of 30CrMnSi seamless steel pipe:
Tensile strength (σb/MPa): ≥1100
Yield point (σs/MPa): ≥800
Elongation after break (δ5/%): ≥10
Reduction of area (ψ/%): ≥45
Impact absorption energy (Aku2/J): ≥50
Brinell hardness (HBS100/3000) (annealed or high temperature tempered state): ≤229

30CrMnSi seamless steel pipe heat treatment specification:
Quenching 880°C, oil cooling; tempering 540°C, water cooling, oil cooling.

30CrMnSi seamless steel pipes are mostly used to manufacture various important parts with high load and high speed, such as gears, shafts, clutches, sprockets, grinding wheel shafts, bushings, bolts, nuts, etc., and are also used to manufacture wear-resistant and low-temperature parts. Parts, welded components with variable loads, such as blades and valve plates of high-pressure blowers, and non-corrosive pipeline pipes.

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