42CrMo4 Black Forged Alloy Steel Round Bar in All Sizes

• Customization: Available
• Type: Alloy Steel Bar
• Standard: AISI, ASTM, GB, JIS, DIN, BS
• Model NO.: 4140 STEEL
• Technique: Forged
• Application: Structural Steel Bar, Tool Steel Bar, Die Steel Bar
• Alloy: Alloy
• Special Use: Alloy Steel
• Delivery Condition: Forged / Forged+Rough Turned
• Heat Treatment: Annealed, Normalized, Qt
• MOQ: One Piece
• Grades: SAE 4140 En19 42CrMo4
• Transport Package: Standard Sea Worthy
• Specification: 200-1000mm
• Origin: China
• Production Capacity: 3000tons/Month

Product Description

42CRMO4  Black forged alloy steel round bar in all sizes

Hammer Forged Steel Round Square Bar 42CRMO4 Forged Black Steel

1.42CRMO4 forged steel bar sizes we can offer;
Round bar: 200-1000mm
Square bar:150×150-600×600mm

2.Supply condition for 42CRMO4 Forged steel bars:Black /Rough Machined /Rough turned

3.Futhur heat treatment for 42CRMO4 forged steel :
Normalized
Annealed
Q&T(Quenched&Tempered)

4.42CRMO4 Forged Steel round bar tolerance:
Black surface
Forged sizes up to 500mm (-0/+5mm)
Forged sizes above 500mm in diameter (-0/+8mm)
Machined surface to all sizes (-0/+3mm)

5.42CRMO4 Steel Equivalent

Standard	AISI / SAE 4140
UNS	-
WERKSTOFF NR.	41CrMo4, 42CrMo4, 42CrMoS4, 43CrMo4
BS 970	708M40, 708A42, 709M40, En19, En19C
UNI	41CrMo4, 38CrMo4 (KB), G40 CrMo4, 42CrMo4
JIS	SCM 440, SCM 440H, SNB 7, SCM 4M, SCM 4
EN name	42CrMo4
EN #	1.7223, 1.7225, 1.7227, 1.3563

6.42CRMO4 Forged steel 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

7.42CRMO4 Steel Application
42CRMO4 steel finds many applications as forgings for the aerospace,oil and gas,automotive, agricultural and defense industries etc.
Typical applications for 42CRMO4 steel uses include:forged gears,spindles,fixtures,jigs,collars,Axles,conveyor parts,crow bars,logging parts,shafts,sprockets,studs,pinions,pump shafts, rams, and ring gears etc

8.Quality control:
1. Melting Process: EAF/BOF+LF+VD resulting in ingots
2. Both ends cut by saw
3. Ratio of forging:minimum 3:1
4. Grain size of final product: according to ASTM E112 more than 5,preferred more than 8
5. Ultrasonic test: As per SEP1921 Class C/c or D/d

9.Heat treatment of 42CRMO4 Steel 
Quenched and Tempered (+QT) of EN19 Steel
1. Heat 42CRMO4 steel slowly to 840-875°C;
2. Soak at this temperature then quench in oil;
3. Temper as soon as 42CRMO4 reach room temperature (20°C);
4. Heat uniformly to the suitable temperature of 560°C;
5. Withdraw the material from the furnace and cool in the air.                                                      
Annealing of 42CRMO4 Alloy Steel
1. Heat the 42CRMO4 slowly to 800-850°C and allow enough time.
2. Cool slowly in the furnace to 480°C followed by air cooling

10.MOQ: one piece per size/grade

11.Payment term: FOB CIF CFR EXW and so on

12.Delivery time : 7 to 30 days after deposit received.













42CRMO4  Black forged alloy steel round bar in all sizes
42CRMO4  Black forged alloy steel round bar in all sizes 
42CRMO4  Black forged alloy steel round bar in all sizes