steel bar
Alloy Steel Bar
AISI, ASTM, DIN, JIS, GB
Ferrous Steel Scrap
Cold Drawn
Bar
Polished
Cold Heading Steel, Free Cutting Steel, Mold Steel
Structural Steel Bar
Hot Rolled or Cold Drawn or Forged
Balck or Bright
Auto Parts,Shaft or Bolts
dajin
Seaworhty Packaging
10-300mm
China
Product Description
SCM420H SCM415H SCM435 SCM440 alloy round steel bar
SCM420H Steel Round Bars
11. Hardness: 250HB
12. Grain Size: 5 to 8
13. Length: The ends will be saw cut, not flame or gas cut. The ends will be from burrs and slag lumps. Length can be customized according to customers' demands.
14. Straightness: 3mm/m(max)
15. Processing:
Surface Treatment: Peeling, Turning, Grinding, Milling, Drilling, Boring
Heat Treatment: Normalizing, Annealing, Quenching+ Tempering
16. Markings: Material, Dimension, Heat No.
17. Quality tests: Spectral Tested, Microstructure Tested, Macrostructure Test, Joming Hardness Test, Upsetting Test
18. Packing:
*Bars from different heats will not be mixed and dispatched.
*Bars will be bundles and securely metal strapped in 3 min places of the bar length and tagged properly.
*For further processing products such as cold drawn/peeled or heat treated goods, plastics bag wrapped or pallet loading is available according to customer's demands.
SCM420H Steel Round Bars
- Specification: SCM420H
- Application: Automobile Components
- Production Line: EAF(EBT) → LF → VD → Continuous Casting → Hot Rolled
- Steel Grades in different standards:
| GB | JIS | DIN | ASTM/AISI/SAE |
| 20CrMoH | SCM420H | 18CrMo4H | 4120H |
5.Chemical composition:
| C | SI | MN | S | P | CR | MO |
| 0.17-0.23 | 0.17-0.37 | 0.55-0.90 | 0.03 (max) | 0.03 (max) | 0.85-1.25 | 0.15-0.35 |
6.Delivery condition and Dimensions:
| Hot Rolled | 16mm to 260mm |
| Cold Drawn | 8mm to 100mm |
| Peeled/Turned | 14mm to 120mm |
7.Dimension Tolerances:
| DIA | 7-20 | 20-30 | 30-50 | 50-80 | 80-110 | 110-150 | 150-190 | 190-250 |
| MM | +0.35 -0.35 | +0.40 -0.40 | +0.50 -0.50 | +0.70 -0.70 | +1.0 -1.0 | +1.3 -1.3 | +2.0 -2.0 | +2.5 -2.5 |
8.Gas Contents:
| Oxygen | Nitrogen | Hydrogen |
| 20ppm(max) | 90ppm(max) | 2ppm(max) |
9.Inclusion Rating:
| A | B | C | D | |
| MAX | MAX | MAX | MAX | |
| Thin | 2.0 | 2.0 | 2.0 | 2.0 |
| Thick | 1.0 | 1.0 | v | 1.0 |
10.Hardenability Test:
| J2.5 | J4.8 | J12.7 |
| 41/47HRC | 35/43HRC | 24/32HRC |
12. Grain Size: 5 to 8
13. Length: The ends will be saw cut, not flame or gas cut. The ends will be from burrs and slag lumps. Length can be customized according to customers' demands.
14. Straightness: 3mm/m(max)
15. Processing:
Surface Treatment: Peeling, Turning, Grinding, Milling, Drilling, Boring
Heat Treatment: Normalizing, Annealing, Quenching+ Tempering
16. Markings: Material, Dimension, Heat No.
17. Quality tests: Spectral Tested, Microstructure Tested, Macrostructure Test, Joming Hardness Test, Upsetting Test
18. Packing:
*Bars from different heats will not be mixed and dispatched.
*Bars will be bundles and securely metal strapped in 3 min places of the bar length and tagged properly.
*For further processing products such as cold drawn/peeled or heat treated goods, plastics bag wrapped or pallet loading is available according to customer's demands.
