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4140 shaft material peeled, ground and polished steel bar
4140 ground and polished steel bar is usually quenched and tempered to get higher mechanical properties and hardness. 4140 qt steel round bar is 4140 steel bar after quenching and tempering with oli quenching media before using, it can also be called as 4140 hardened steel bar or 4140 quenched & tempered steel bars, 4140 qt steel bar and 4140 ht steel bar. 4140 qt steel bar has high hardness and good mechanical properties. We can produce 4140 ht steel rod with difference hardness mechanical properties according to customers different technical requirements. We can supply various 4140 qt steel round bar such as 4140 tg&p steel bar, 4140 peeled & polished steel bar, 4140 cold drawn and QT steel bar etc.
4140 steel specicification:
1. 4140 equivalent steel material: 42CrMo, 42CrMo4, 4140, scm440, 42cd, as 4140
2. 4140 steel chemical composition: C: 0.38-0.48, Si: 0.15-0.35, Mn: 0.75-1.00, S/P: 0.035 max, Cr: 0.90-1.20, Mo: 0.15-0.25
3. 4140 steel grade: astm a193 grade B7, ISO grade 8.8, 10.9, 12.9, astm f1554 grade 105
4. 4140 steel common mechanical properties:
Tensile Strength: 860MPa min
Yield Strength: 720MPa min
Elongation: 16% min
Reduction of Area: 52% min
Hardness: 35HRC max
5. 4140 steel bar shapes:
4140 round steel bar, 4140 square steel bar, 4140 flat steel bar, 4140 hexagonal steel bar
6. 4140 technical parameters:
A.4140 steel bar diameters: 10mm to 100mm
B. 4140 steel bar diameter tolerance: 0.025 mm min
C. 4140 steel bar length: 100mm min per piece
D. 4140 steel bar length tolerance: +/-1mm
E. 4140 steel bar surface roughness: 0.4um min
F. 4140 steel bar straightness: 0.5mm/m min
G. 4140 steel bar ovality: 75% of diameter tolerance
7. 4140 steel bar applications:
high strength stud bolt, threaded rods, wind power bolt, prestressed anchor bolts, post stressed anchor bolt, steel tie rod, tie bar, tension rod, tension bar etc. Shaft, axle shaft, crankshaft, shaft for sleeve, linear shaft, pump shaft, rotor shaft, sensor shaft, spline shaft, drive shaft, mandrel shaft, transmission shaft, screw rod etc. CNC machines, precision CNC machines etc. Ejector pins and Ejector rods
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Main Product:
Cold Drawn Steel Bar,
Bright Steel Bar,
Heat Treated Steel Bar and Tube,
Threaded Rods,
High Strength Steel Tie Rod ,
High Strength Steel Bolts
