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Qingdao Helio Steel Co., Ltd.

Steel Round Bar, Forged Steel Round Bar, Round Bar manufacturer / supplier in China, offering AISI4340 Alloy Steel Bar with High Quality, Cold Drawn Steel Bars S25c S30c S35c, AISI 1045/DIN 1.1191/JIS S45c Hot Rolled Carbon Steel Round Bar and so on.

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AISI4340 Alloy Steel Bar with High Quality

Purchase Qty.:
10-199 200+
FOB Unit Price: US $550 US $900
Purchase Qty. (Tons) FOB Unit Price
10-199 US $550
200+ US $900
Get Latest Price
Production Capacity: 5000 Metric Ton/Metric Tons Per Month
Transport Package: Standard Seaworthy Packing
Payment Terms: L/C, T/T

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Basic Info
  • Model NO.: Dia: 20-320mm
  • Standard: AISI, ASTM, GB, JIS, DIN, BS
  • Application: Structural Steel Bar, Tool Steel Bar, Die Steel Bar
  • Special Use: Mold Steel
  • Dimensions: 20-320mm
  • Surface: Black and Bright Surface
  • Specification: Dia: 20-320mm
  • Type: Alloy Steel Bar
  • Technique: Hot Rolled
  • Alloy: Alloy
  • Steel Grade: ASTM4340 42CrMo 42CrMo4 Alloy Steel Round Bar
  • Length: 3-12m
  • Trademark: HELIO STEEL
  • Origin: Qingdao, Shandong Province
Product Description
AISI4340 Alloy Steel Bar

1. Grade:

America Standard: AISI4340
Chinese Standard: 40CrNi2Mo

2. Available sizes:

Dia: 10-310mm
Length: 3-12m

3. Delivery condition: Hot rolled or forged, Peeled or black surface, annealed or QT.

4. Applications:

Statically and dynamically stressed components for vehicles, engines and machines. For parts of larger cross-sections, crankshafts, gears.

5. Heat Treatment:

Soft annealing: Heat to 680-720° C, cool slowly.
Hardness after annealing: Max. 241 HB
Hardening: 820 - 850 ° C
Normalizing temperature: 840-880° C
Tempering: 540-680° C

6. Inspection: 100% Ultrasonic according to the test standards: SEP1921-84, GR. 3 CLASS C/C

7. Packing situation: Standard seaworthy packing or as customer required

8. Delivery time: 30 days after order confirmed

9. Process: EAF+LF+VD ( necessary) +UT+ Peeled(optional) +Turned (optional)

+ Heat Treatment (optional)

About us:

We can supply steel round bar, square steel, the grade such as, SS400B, S20C, S45C, Ck45, SAE1020B, SAE1045B, SAE4140, SAE4150, SAE4340, SAE8620, 42CrMo4, 15B36Cr, S50C, S65C. The diameter is from 20mm to 320mm. It is hot rolled and Black surface. If you need, please feel free to contact me.
We have been specialized in exporting steel products for more than 10 years, include: Steel bars(round, square, flat bars), steel sheets, steel plates. Steel billets, steel profiles, H beam, Channel beam, I beam, and so on. Prices and quality, service are always good. And we promise "High Quality, Competitive Price, Timely Delivery" of our products. We welcome worldwide customers to visit us and create a brilliant future together.

Welcome your inquiry us at any time.
For more information, please feel free to contact with me directly.



Qingdao Helio Steel Co., Ltd
Add: No. 18-2-907 Qinling Road, Qingdao City, Shandong province
Tel: +86-532-55786052 Fax: +86-532-55786051
Mobile: (0086-532) 13256827692
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