China JIS Scm440 Scm435 Black Forged Steel Round Bars

Model NO.
4140 STEEL
MOQ
One Piece
Grades
SAE 4140 En19 42CrMo4
Heat Treatment
Annealed, Normalized, Qt
Delivery Condition
Forged / Forged+Rough Turned
Transport Package
Standard Sea Worthy
Specification
200-1000mm
Origin
China
Production Capacity
3000tons/Month
Reference Price
$ 630.00 - 810.00
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Product Description

China JIS Scm440 Scm435 Rough Black Steel Round Bars 

Hammer Forged Steel Round Square Bar Scm440 Forged Black Steel

1.Scm440   forged steel bar sizes we can offer;
Round bar: 200-1000mm
Square bar:150×150-600×600mm

2.Supply condition for Scm440 Forged steel bars :Black /Rough Machined /Rough turned

3.Futhur heat treatment for Scm440 forged steel :
Normalized
Annealed
Q&T(Quenched&Tempered)

4.Scm440 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.Scm440 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.Scm440 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.Scm440 Steel Application
Scm440 steel finds many applications as forgings for the aerospace,oil and gas,automotive, agricultural and defense industries etc.
Typical applications for  Scm440 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 Scm440 Steel 
Quenched and Tempered (+QT) of EN19 Steel
1. Heat Scm440 steel slowly to 840-875°C;
2. Soak at this temperature then quench in oil;
3. Temper as soon as Scm440 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 Scm440 Alloy Steel
1. Heat the Scm440  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.

China JIS Scm440 Scm435 Black Forged Steel Round Bars 
China JIS Scm440 Scm435 Black Forged Steel Round Bars 
China JIS Scm440 Scm435 Black Forged Steel Round Bars 

China JIS Scm440 Scm435 Black Forged Steel Round Bars 
China JIS Scm440 Scm435 Black Forged Steel Round Bars 
China JIS Scm440 Scm435 Black Forged Steel Round Bars 
China JIS Scm440 Scm435 Black Forged Steel Round Bars 
China JIS Scm440 Scm435 Black Forged Steel Round Bars 
China JIS Scm440 Scm435 Black Forged Steel Round Bars 
China JIS Scm440 Scm435 Black Forged Steel Round Bars 

China JIS Scm440 Scm435 Black Forged Steel Round Bars 
China JIS Scm440 Scm435 Black Forged Steel Round Bars 
China JIS Scm440 Scm435 Black Forged Steel Round Bars 

 

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