1020 / S20C / S20K Cold Drawn Round Bar Widely Used In Machinery Making
Application
Cold Drawn steel round bar are widely used in machinery making, autombile making, railway, mine machinery, petoleum machinry, agricultural machinery and civil archtectue such as all kinds of shafts, screws, connecting rods, hardware tools, gears, standard parts, spanners fasteners, structural parts for automobile and agricultural machinery, outer and iner sleeves, rollers and balls for bearing making.
Chemical composition(%):
| Grade | C | Si | Mn | P | S | Cr | Mo |
| 1020 | 0.18-0.25 | / | 0.30-0.60 | 0.040 max | 0.050 max | / | / |
Do you have these Difficulties?
| Difficulties | a material that is difficult to shape or form |
| not to invest capital to replace worn out machines, retool machines or add capacity |
| using equipment infrequently and can't justify the expense |
| benefit from the reduced machining associated with near net shapes |
| buying from machine shops and find the cost expensive |
| lack the skilled labor to produce precision, high-quality parts or who can't find skilled craftsmen |
If yes,please use Precision Cold Drawn Products.
Tolerance and roughness
| Size | Standard Tolerance(inches) | Special Tolerance(inches) | Min.Corner Radii(inches) | Max.Surf.Roughness |
| 0.125-0.4375 | 0.002'' | 0.001'' | 0.015'' | 63Ra |
| 0.4375-0.75 | 0.003'' | 0.0015'' | 0.03'' | 90Ra |
| 0.75-1.5 | 0.003'' | 0.0015'' | 0.03'' | 125Ra |
| 1.5-2.5 | 0.004'' | 0.002'' | 0.03'' | 125Ra |
| 2.5-3.0 | 0.005'' | 0.0025'' | 0.03'' | 125Ra |
| 3.0-4.0 | 0.006'' | 0.003'' | 0.03'' | 125Ra |
Certificate of Quality: issued in English, in addition the normal terms, production process, the mechanical property yield strength, tensile strength, elongation and hardness, forged ratio, UT test result, Grain size, heat treatment methods and the sample of is shown on the Certificate of Quality.
Packing: Plastic reel shaft, and bound, iron wire frame, the paper barrel etc
Please feel free to contact us again if you have any further questions. We look forward to receiving an order from you.
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