Scm420h Scm415h Scm435 Scm440 Alloy Round Steel Bar

• Type: Alloy Steel Bar
• Standard: AISI, ASTM, DIN, JIS, GB
• Composition: Ferrous Steel Scrap
• Technique: Cold Drawn
• Shape: Bar
• Surface Treatment: Polished
• Model NO.: steel bar
• Special Use: Cold Heading Steel, Free Cutting Steel, Mold Steel
• Application: Structural Steel Bar
• Supply Condition: Hot Rolled or Cold Drawn or Forged
• Surface: Balck or Bright
• Main Usage: Auto Parts,Shaft or Bolts
• Transport Package: Seaworhty Packaging
• Specification: 10-300mm
• Trademark: dajin
• Origin: China
• Production Capacity: 5000

Product Description

SCM420H SCM415H SCM435 SCM440 alloy round steel bar 
SCM420H Steel Round Bars

1. Specification: SCM420H
2. Application: Automobile Components
3. Production Line: EAF(EBT) → LF → VD → Continuous Casting → Hot Rolled
4. 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

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.