Hot Rolled 42CrMo / 4140 / 42CrMo4/1.7225 / Scm440 Alloy Steel Round Bars

• Type: Alloy Steel Bar
• Standard: AISI, ASTM, GB, JIS, DIN, BS
• Technique: Hot Rolled
• Application: Structural Steel Bar, Tool Steel Bar, Die Steel Bar
• Surface Treatment: Hot Rolled,Steel Self Black
• Alloy: Alloy
• Model NO.: 42CrMo / 4140 / 42CrMo4/1.7225 / SCM440
• Special Use: Mold Steel, Free Cutting Steel, Cold Heading Steel
• Products: AISI 4140 42CrMo Hot Rolled Steel Round Bar
• Diameter Range: 16mm to 310mm
• Ut Test Standard: Sep 1921 C/C
• Length: Standard 6m or as Required
• Surface: Hot Rolled Black Surface
• Stocks or Not: Ready Stocks with Different Size
• Transport Package: Standard Sea Worthy
• Specification: M16-M310
• Trademark: Laiwu Xincheng
• Origin: China
• HS Code: 72283090
• Production Capacity: 3000tons/Month

Product Description

Hot Rolled 42CrMo / 4140 / 42CrMo4/1.7225 / SCM440 Alloy Steel Round Bars
SAE 4140 EN19 Hot Rolled Black Surface Steel Round Bar.

1.Supplied sizes range:
Hot rolled steel:16mm to 310mm.
Forged steel:250mm to 1000mm
Cold drawn steel:5mm to 100mm
Peeled steel:20mm to 300mm
Q&T steel :12mm to 1000mm

 

2.Equivalent grades in different standard

GB,YB	JIS	DIN(W-Nr.)		BS	NF
42CrMo	SCM440/(SCM4)	42CrMo4-1.7225	4140	708M40/709M40/708A42/EN19	42CD4

3.Chemical compositions 

Standard	Grade	C	Cr	Mo	Si	Mn	P	S
ASTM	4140	0.38-0.43	0.80-1.10	0.15-0.25	0.15-0.35	0.65-1.00	0.035	0.04

4.Physical property

Tensile Strength	Yield Strength	Elongation	Reduction	Impacting  Energy	HBW(after annealing)
Rm,MPa	Rel,MPa	A,%	Z,%	Aku,J	≤
≥1080	≥930	≥12	≥45	≥63	217

5.Quality control
1.Processing Line:
Iron - hot metal pretreatment - Converter - Refining --VD / RH- - Continuous Casting - Hot Rolling (KOCKS) - heat --UT Check - Processing and Distribution Center
Electric Furnace - Refining --VD / RH- - Continuous Casting - Hot Rolling (KOCKS) - heat --UT Check - Processing and Distribution Center
2.Gas content level:O2 - <20 ppm H2 - <2 ppm N2- <100 ppm
3.Grain Sizes:5-8
4. non-metallic inclusions contorlling level

	A	B	C	D
	MAX	MAX	MAX	MAX
Thin	2	2	2	2
Thick	1	1	1	1

6.Delivery time of steel bar:
7-10days of stock,30 days after order confirmed for new produced .
7.Payment term:TT or LC
8.Free sample:Yes
9.steel bar Inspection: Spectral Tested, Microstructure Tested,Hardness Test,Macrostructure Test,UT test and so on. 
10.Mark: Heat Number,Weight,Sizes,Grade,etc