24 July 2021 Structural Steel Bar
DIN 1.8507 Structural Steel Bar
DIN 1.8507 is equivalent to 38crmoal, is a high-grade nitrided steel, with high wear resistance, high fatigue strength and high strength characteristics. Mainly used for nitrided parts with precise dimensions after heat treatment, or various nitrided parts with low impact load and high wear resistance, such as boring bar, grinding spindle, automatic lathe spindle, worm, precision screw, precision gear, High-pressure valves, stems, gauges, templates, rollers, mock-ups, cylinder blocks, piston rods for compressors, governors, rotating sleeves, fixed sleeves on turbines, various wear parts on rubber and plastic extruders, etc.
DIN 1.8507 steel has a high surface hardness, wear resistance and fatigue strength, and has good heat resistance and corrosion resistance, hardenability is not high. It is used to produce nitrided parts with high wear resistance, high fatigue strength and considerable strength, and high dimensional precision after processing, such as imitation dies, cylinder liners, gears, high pressure valves, boring bars, worms, and grinding spindles. However, larger-sized parts should not be used.
Chemical Composition:
| C(％) | Si(％) | Mn(％) | P(％) | S(％) | Cr(％) | Mo(％) | Al(％) |
|---|---|---|---|---|---|---|---|
| 0.30～0.37 | ≤0.040 | 0.40 ~ 0.70 | ≤0.025 | ≤0.035 | 1.00～1.30 | 0.15 ~ 0.25 | 0.80 ~ 1.20 |
Mechanical Propoerties:
| Yield Strength Rp0.2(MPa) | Tensile Strength Rm(MPa) | Elongation δ5 (%): | Reduction of area ψ (%): | Impact energy Akv (J): | Impact toughness value αkv (J/cm2) | Hardness |
|---|---|---|---|---|---|---|
| ≥ 750 | ≥ 1150 | ≥ 11 | ≥ 50 | ≥ 51 | ≥ 48(5) | ≥ 285 HB |
Equivalent Grade:
Grade: 34CrAlMo5
Number code: 1.8507
Chinese brand: 38CrMoAl