SAE 4140 En19 42CrMo4 Steel Round Bar
SAE 4140 En19 42CrMo4 Steel Round Bar
| Min. Order / Reference FOB Price | |
| 20 Tons | US $700-900/ Ton |
| Port: | TIANJIN, SHANGHAI, DALIAN, QINGDAO,China |
| Production Capacity: | 40000tons/Month |
| Payment Terms: | L/C, T/T, D/P, Western Union, Paypal, Money Gram |
| Type: | Alloy Steel Bar |
| Standard: | AISI, ASTM, GB, JIS, DIN, BS |
| Technique: | Forged |
| Application: | Structural Steel Bar, Tool Steel Bar, Die Steel Bar |
| Alloy: | Alloy |
| Special Use: | Alloy Steel |
| Model NO. | MOQ | Grades | Specification | Transport Package |
| 4140 STEEL | 20 ton | SAE 4140 En19 42CrMo4 | 200-1000mm | Standard Sea Worthy |
Forged Steel Round Square Bar 42crmo Forged Black Steel
1.42crmo forged steel bar sizes we can offer;
Round bar: 200-1000mm
Square bar:150×150-600×600mm
2.Supply condition for JIS G4051 S45C Forged steel bars:Black /Rough Machined /Rough turned
3.Futhur heat treatment for JIS G4051 S45C forged steel:
Normalized
Annealed
Q&T(Quenched&Tempered)
4.42crmo 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. 42crmo 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. 42crmo 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. 42crmoSteel Application:
42crmo steel finds many applications as forgings for the aerospace,oil and gas,automotive, agricultural and defense industries etc.
Typical applications for 42crmo 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 42crmo Steel
Quenched and Tempered (+QT) of EN19 Steel
1. Heat 42crmo steel slowly to 840-875°C;
2. Soak at this temperature then quench in oil;
3. Temper as soon as 42crmo 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 42crmo Alloy Steel
1. Heat the 42crmoslowly to 800-850°C and allow enough time.
2. Cool slowly in the furnace to 480°C followed by air cooling
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