Alloy Steel Hot Forged 4140 42CrMo4 4340 Forging Rings Forged Hollow Bar

• Type: Forged Ring
• Standard: AISI, ASTM, GB, JIS, DIN, BS
• Technique: Forged
• Surface Treatment: Black or Rough Machined
• Alloy: Alloy
• Ut Test: Sep1921- Class C/C, D/D
• Model NO.: 4140 42CrMo4 4340 Forging Rings
• PRO: Forged Rings
• Grades: Scm440/4140/En19/42crmos4
• MOQ: 1PC
• Transport Package: Standard Seaworthy
• Specification: 200-1000mm
• Trademark: Laiwu Xincheng
• Origin: China
• HS Code: 72284000
• Production Capacity: 3000tons/Month

Product Description

Alloy Steel Hot Forged 4140 42CrMo4 4340 Forging Rings Forged Hollow Bar

1.About 4140 Alloy Steel :

.AISI 4140 alloy steel is chromium, molybdenum, manganese containing low alloy steel. It has high fatigue strength, abrasion and impact resistance, toughness, and torsional strength. 
 

2. AISI 4140 Steel Specification and Relevant Standards

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

3. ASTM 4140 Steels And Equilvalents Chemical Composition

Standard	Grade	C	Si	Mn	P	S	Cr	Mo
ASTM A29	4140	0.38-0.43	0.15-0.35	0.75-1.00	≤ 0.035	≤ 0.04	0.8-1.1	0.15-0.25
	42CrMo4	0.38-0.45	≤ 0.4	0.6-0.90	≤ 0.025	≤ 0.035	0.9-1.2	0.15-0.30
EN10083	1.7225
JIS G4105	SCM440	0.38-0.43	0.15-0.35	0.6-0.85	≤ 0.035	≤ 0.04	0.9-1.2	0.15-0.30
GB 3077	42CrMo	0.38-0.45	0.17-0.37	0.5-0.80	≤ 0.035	≤ 0.035	0.9-1.2	0.15-0.25
BS 970	EN19	0.35-0.45	0.15-0.35	0.5-0.80	≤ 0.035	≤ 0.035	0.9-1.5	0.2-0.40

4.AISI 4140 Forged Round Bar Mechanical Property :
(For refference only, property can be changed by adjusting quenching and tempereing tempreture)

Grade	Tensile strength σb(MPa)	Yield strength σs (MPa)	Elongation δ5 (%)	Reduction ψ (%)	Impact Value Akv (J)	Hardness
4140	≥1080	≥930	≥12	≥45	≥63	28-32HRC

5.Forged Steel Size we can supply:

Forged Steel Round Bar	Φ85mm~1200mm
Forged Square steel Bar:	150×150-800×800mm
Forged Flat Blocks:	(150mm-800mm)*(200mm-800mm)
Forged Shaft and Forged Ring	According to Customer's drawing

5.Inspecting:
UT according toSEP1921 C/c, D/d, E/e, A388 or GB/T 6402, 
Spectral Tested, Microstructure Tested,Hardness Test,Macrostructure Test,

6.Delivery Condition:
Forged+black surface
Forged+rough machined
Forged+rough turned+QT/annealed/normalized
Surface condition: Black; Peeled; Polished; Machined; Grinded; Turned; Milled
7.Manufacture:EAF+LF+VD(Annealed,normalized,Quenched+Tempered,peeled,rough turned).
8.Heat Treatment: Normalized / Annealed / Quenched / tempered (optional)

 

Main Grade we can supply for forged steel bars

Steel series	Representative steel type
Carbon Steel series	AISI 1020,1045,A36,S355JR,S355JO
Petroleum machinery series	AISI4150,AISI4140,AISI4130,
	30CrMo,4145H
Tool mold series	1.2714,5CrMnMo,5CrNiMoV,
	1.2738,1.2311,1.2312 1.2714 H13
Bearing series	52100,GCr15,SUJ2
Marine series	4140,42CrMo,SCM440,
	709M40
Car series	SAE8620,20CrNiMo,
	SNCM220
Heavy-duty transmission series	40CrNiMo,SNCM439,
	SAE4340,EN24
Mining machinery series	655M13,826M40,
	25CrMo
Wind power gear series	18CrNiMo7-6, 17CrNiMo6, 1.6582,1.6587,SAE8620
Wind power spindle series	34CrNiMo6,817M40
Nitriding series	20MnCr5,38CrMoAl,
	31CrMoV9
Pressure vessel series	15CrMo,13CrMo4-4
Metallurgical roll series	21CrMoV511,W1.7225,
	EN19,709M40

About our factory:
Our main products include Forged Steel Round Bar from Sizes 85mm to 1100mm, Forged Steel Square Bar from Sizes 150×150 to 800×800mm with various grade ;The largest production steel ingot 15T, mainly forged alloy steel, carbon steel and other materials. The annual output of forged round can reach 60,000 tons. The products are widely used and can be supplied to users in metallurgy, chemical, hydraulic, port and marine machinery The main equipment includes a 2000-ton hydraulic press, a 3-ton electro-hydraulic hammer, a 2.5-meter ring rolling machine, and is equipped with large and small traveling machines, metalworking lathes, and multiple large and small sawing machines. The company now has more than 100 sets of production equipment from a whole set of processes from blanking, heating, forging to heat treatment and machining.