8111 Single Offset Box Wrench

8111 Single Offset Box Wrench
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The code No.8111 stainless steel single offset box wrench is used to tighten or loosen bolts and nuts, suitable for use where space is limited or deep concavity. It is made of stainless steel processed by drop forging.

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

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℃)
Parameters:
Number S (mm) L (mm) Weight (g)
8111-22 22 190 185
8111-24 24 215 235
8111-27 27 230 270
8111-30 30 255 430
8111-32 32 265 450
8111-36 36 295 610
8111-41 41 330 855
8111-46 46 365 1000
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