STAINLESS STEEL SS304QF ADJUSTABLE WRENCH, SIZE 8" / 200 mm (0–24 mm), SPARK X8115-1006
304QF stainless steel tools technical parameters:
Chemical composition: %
| C | Si | Mn | Cr | Ni | S | P | N |
| ≤0.08 | ≤0.85 | ≤1.8 | 18.0-20 | 8.0-10.5 | ≤0.03 | ≤0.045 | ≤0.2 |
Physical property
- Tensile strength: σb(MPa)≥520
- Tensile strength: σb(MPa)≥520
- Offset yield strength:σ0.2(MPa)≥205
- Elongation:δ5(%)≥40
- Contraction percentage of area: z(%)=60
- Density (20℃, g/cm3): 7.93
- Hardness: HRC15-25
- Melting point (℃): 1398~1454
- Specific heat (0~100℃, KJ·kg-1K-1): 0.50
- Heat conductivity (W·m-1·K-1): (100℃) 16.3, (500℃) 21.5
- Linear expansion coefficient (10-6·K-1): (0~100℃) 17.2; (0~500℃) 18.4
- Resistivity (20℃, 10-6Ω·m): 0.73
- Magnetism: ≤5nT within 10cm in the magnetic field
2. Martensitic stainless steel (cutting tools stainless steel): representative grade: 420
The mechanical property of martensitic stainless steel is adjustable by heat treatment. Generally speaking, it is a type of hardenable stainless steel. It is hardened after quenching. Different tempering temperatures give different combinations of hardness and toughness. This stainless steel is widely used in such industries where the requirements of corrosion resistance is not very high, plus the cutting tools and machine elements have high requirements on strength.
420 stainless steel tools parameters:
Chemical composition: %
| C | Si | Mn | Cr | Ni | S | P |
| 0.16-0.25 | ≤1.00 | ≤1.00 | 12.0-14.0 | ≤0.75 | ≤0.03 | ≤0.04 |
Physical property
- Tensile strength: σb(MPa)≥365
- Offset yield strength:σ0.2(MPa)≥440
- Elongation:δ5(%)≥20
- Contraction percentage of area: z(%)=50
- Density (20℃, g/cm3): 7.75
- Hardness: HRC35-45
- Melting point (℃): 1427
- Specific heat (25℃, J·kg-1K-1): 460
- Heat conductivity (W·m-1·K-1): 24.9
- Linear expansion coefficient (mm/℃): (at20-100℃)