Easy cut steel SUM31 polishing rod Centerless polishing round cutting grinding rod

SUM31 free cutting steel is mainly used for making instruments, watch parts, automobiles, machine tools and other machines with small forces and strict requirements for size and finish, and strict requirements for dimensional accuracy and finish

Standard parts with relatively low mechanical performance requirements, such as gears, shafts, bolts, valves, bushings, pins, pipe joints, spring cushions and machine tool screws, plastic molding molds, surgical and dental procedures. Specifically as follows

1. Automatic lathe processing, metal stamping parts processing;

2. Electronic industry, optical fiber connectors, optical disc drives, scanners, medical equipment;

3 Household appliances, instrumentation industry;

4. Office equipment (computers, photocopiers, cameras, fax machines, etc.);

5. Clock components, glasses;

6. Electronic terminal needle, timer, carburetor;

7. Decorations, lighting products, cars, locomotives, chains;

8. Clean car sweepers and toys;

9. Pens, handbag accessories, belt buckle, fishing gear, etc.;

10. Stud bolts, screws, nuts, pipe joints, spring seats, etc.

The SUM31 free cutting steel complies with JIS G 4804-1999

SUM31 Free cutting tempering components:

Carbon C: 0.14 ~ 0.20

Manganese Mn: 1.00 to 1.30

P: 0.040

Sulfur S: 0.08 ~ 0.13

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