Introduction to SUM42 Free Cutting Steel:
SUM42 is a free cutting steel suitable for machining highly rigid parts such as lead screws, smooth rods, rack and spline shafts. Grade: SUM42 Application: It is suitable for machining parts requiring high rigidity Execution standard: JIS G4804-1999
SUM42 is a free cutting steel suitable for machining highly rigid parts such as lead screws, smooth rods, rack and spline shafts.
SUM42 Features
Executive standard :JIS G4804-1999, is high sulfur medium carbon free cutting steel, has better cutting performance, compared with 45 steel can increase the tool life four times, improve the production efficiency of 30%, has higher strength and hardness.
SUM42 Application
Suitable for machining parts requiring high rigidity, such as lead screw, smooth rod, rack and spline shaft, etc.
SUM42 Chemical Composition
C: 0.37~0.45 Si: 0.15~0.35 Mn: 1.20~1.55 S: 0.02~0.30 P: ≤0.05
SUM42 Mechanical Property
- Tensile strength σb (MPa) :(hot rolling)590 ~ 735; (high temperature tempering after cold drawing)590 ~ 785
- Elongation Δ5 (%) :(hot rolling)≥14; (cold rolled) 17 or more
- Section shrinkage ψ(%) :(hot rolling)≥20
- Hardness :(hot rolling)≤207HB; (cold drawn)179 ~ 229HB
- Status of delivery: hot rolled or cold drawn.
Can produce SUM42 specifications and size
- Round bar: Φ1 to Φ2000
- Square-shape steel/Flate bar: 10 to 1000
- Steel Plate/Sheet: 0.08 to 800(T)*10 to 1500(W)*Long
- Forging: Pipe/tube/slugs/donuts/cubes/other shapes
- Tubings: OD: Φ4-410; WT: 1-35 mm
- Steel coils and strip: THK:0.1mm Width:1500mmdiv
| Product type | Products | Dimension | Processes | Deliver Status |
|---|---|---|---|---|
| Plates / Sheets | Plates / Sheets | 0.08-200mm(T)*W*L | Forging, hot rolling and cold rolling | Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting |
| Steel Bar | Round Bar, Flat Bar, Square Bar | Φ8-1200mm*L | Forging, hot rolling and cold rolling, Cast | Black, Rough Turning, Shot Blasting, |
| Coil / Strip | Steel Coil /Steel Strip | 0.03-16.0x1200mm | Cold-Rolled & Hot-Rolled | Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting |
| Pipes / Tubes | Seamless Pipes/Tubes, Welded Pipes/Tubes | OD:6-219mm x WT:0.5-20.0mm | Hot extrusion, Cold Drawn, Welded | Annealed, Solution and Aging, Q+T, ACID-WASHED |
Relate Steel Type:
12L14 Free Cutting Steel
