Gold Member Since 2014
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Qingdao Helio Steel Co., Ltd.

Steel, Forgings, Steel Forgings manufacturer / supplier in China, offering 4140 8620 4340 Forged Steel Round Bar Ring Shaft, AISI 1020 Cold Drawn Steel Round Bar, Machine Tools Principal Axis Heat Treated Steel Bar and so on.

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Supplier Homepage Product Casting and forging 4140 8620 4340 Forged Steel Round Bar Ring Shaft

4140 8620 4340 Forged Steel Round Bar Ring Shaft

FOB Price: US $500 / Ton
Min. Order: 10 Tons
Min. Order FOB Price
10 Tons US $500/ Ton
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Production Capacity: 500mt
Transport Package: Standard Seaworthy
Payment Terms: L/C, T/T, D/P, Western Union, Paypal, Money Gram

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Basic Info
  • Model NO.: 4140 8620 4340
  • Molding Style: Forging
  • Application: Machinery Parts
  • Heat Treatment: Q+T
  • Forging Tolerance: +/-0.5mm
  • Certification: SGS, CE, ISO 9001:2008
  • Grade: Carbon or Alloy
  • Size: 200mm-1000mm or as Customer′s Drawing
  • Suface Condition: Black Surface or Turnned with Bright Surface
  • Specification: 300mm to 800mm
  • HS Code: 72
  • Processing Object: Metal
  • Molding Technics: Gravity Casting
  • Material: Steel
  • Surface Treatment: Polishing
  • Standard: AISI
  • Name: Forging Steel Bar
  • Main Material: 1020 Ck45 4140 4150
  • Supply Condition: Forged+Q+T
  • Trademark: LE REN
  • Origin: China
Product Description
Steel Forgings

1. Steel grades in different standard and Chemical composition
 Steel gradesCSiMnCrMoNiPSVw
Carbon Structure SteelQ235(B)/SS400/S235JR/A36≤ 0.20≤0.35≤1.40.3-0.4 ≤0.30≤ 0.045≤ 0.045  
20#/CK22, CK20/1020/050A20/S20C0.17-0.230.17-0.370.35-0.650.3-0.4 ≤0.30≤ 0.035≤ 0.035  
45#/CK45, C45/1045/080M46/S45C0.42-0.50.17-0..370.5-0.80.3-0.4 ≤0.30≤ 0.035≤ 0.035  
Alloy Structure Steel20Cr/20Cr4/5120/527A19/SCr420H0.18-0.240.17-0.370.50-0.800.70-1.00≤0.15≤0.30≤ 0.035≤ 0.035  
40Cr/41Cr4/5140/520M40/SCr4400.37-0.440.17-0.370.5-0.80.8-1.1≤0.15≤0.30≤ 0.035≤ 0.035  
30CrMo/4130/1717COS110/SCM4200.26-0.340.17-0.370.4-0.70.8-1.10.15-0.25≤0.30≤ 0.035≤ 0.035  
35CrMo/34CrMo4/4135/708A370.32-0.400.17-0.370.4-0.70.8-1.10.15-0.25≤0.30≤ 0.035≤ 0.035  

2. Mechanical property:
NameTensile Strength (Mpa)Yield Strength  (Mpa)Elongation  (%)AKV    (J)Reduction of Area (%)
 minminminminmin
Q235(B)/SS400/S235JR/
A36
41023525 55
20#/CK22, CK20/1020/
050A20/S20C
41024525 55
45#/CK45, C45/1045/080M46/S45C600355163940
20Cr/20Cr4/5120/527A19/SCr420H41024525 55
40Cr/41Cr4/5140/520M40/SCr44098078594745
30CrMo/4130/1717COS110/SCM420930785126350
35CrMo/34CrMo4/4135/708A37980835126345
42CrMo/42CrMo4/4140/708A42/708M401080930126345
40CrNiMoA/40CrNiMo22/4340/871M40/SNCM439980835127855
65Mn/65/1566/7354309 30
55Si2Mn/55Si7/9255/250A53/SUP6127411766 30
60Si2MnA/65Si7/9260/250A61/SUP7157013755 20
9260H     
50CrVA/50CrVA/6150/735A50/SUP101280113010 40
GCr15/100Cr6/E52100/534A99/SUJ2     
52100     
SAE 8620H98078594740
 
3. Production Line:
EAF(EBT) → LF → VD → IC → ESR → AOD → Forging →NDT → Rough Machining → NDT → Heat Treatment → NDT → Finish Machining→Consignment

4. Further Processing:
Surface Treatment: Peeling, Turning, Grinding, Milling, Drilling, Boring
Heat Treatment: Normalizing, Annealing, Quenching+ Tempering

5. Quality Control: UT tested, Sep1921, Class C/c and D/d

6. Products and Dimensions

7. Advantages:
* Reduced chance of void
* Better fatigue resistance 
* Improved microstructure
* Continuous grain flow
* Finer grain size
* Greater Strength

8. Application: 
* Roller for Metallurgy
* forgings for shipping
* forgings for power station
* High Pressure boiler Tube
* Forgings for Corrugated Roller
* Drill Collars
* Elevator and Slip Recesses
* Heavy Weight Drill Pipe/Kelly
* lifting Subs/Drill String Cross-over Sub
* Stabilizer/Intergral spiral Blade Stabilizer/WZ Type Integral Blade Stabilizer/Three Roller Stabilizer/Non-magnetic Stabilizer
* Mandrel Bar
* Pipe Mould 
* Wind Turbine Shaft

9. Equipment:
Steel Making System
* 40t VD/VOD Furnace
* 40t LF Furnace Melting
* High Power 40t EBT EAF
* 50T Vacuum Casting
* 8t AOD Furnace/*20t ESR Furnace Melting
 
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