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Quick Details

  • Steel Grade: X4317/17CrNiMo6/18CrNiMo7-6/DIN1.6587/820M17/822M17/EN354/EN355
  • Standard: AISI, ASTM, BS, DIN, GB, JIS
  • Dimensions: Dia 80mm-1200mm
  • Place of Origin: Jiangsu, China (Mainland)
  • Brand Name: unite steel
  • Model Number: Forged Round Bar with Black/Grinded
  • Technique: Forged
  • Application: Structural Steel Bar
  • Alloy Or Not: Is Alloy
  • Special Use: Cold Heading Steel
  • Type: Alloy Steel Bar
  • Process: EAF+LF+VOD+Forged+Heat Treatment(optional)
  • Ultrasonic test: According to SEP 1921-84 3C/c
  • Grade: 17CrNiMo6/18CrNiMo7-6
  • Length: as customers requirements
  • Surface: Bright or Black

Packaging & Delivery

Packaging Details Seaworthy Package
Delivery Time within 5-35 days

4317/X4317/17CrNiMo6/ 18CrNiMo7/ 18CrNiMo7-6


8CrNiMo7- 6 Chrome-Nickel-Moly Carburising Steel generally supplied annealed to HB 229max. Carburised and heat treated it develops a hard wear resistant case to HRC 60-63 and a tough strong core with a typical tensile strength range of 900-1300 MPa, in small to fairly large sections.



Heavy-duty arbors, bushings, Cam Followers, wear pins, bearings, sprockets, gears and shafts, Clutch Dogs, Compressor Bolts, Extractors, Fan Shafts, Heavy Duty Gears, Pump Shafts, Sprockets, Tappets, Wear Pins, Wire Guides etc.. Or can be used for high tensile applications uncarburised but through hardened and tempered. It is used extensively by all industry sectors for components and shafts requiring high surface wear resistance, high core strength and impact properties.


Related specifications:

Australia : AS 1444-1996 X4317 or X4317H

Germany: EN10084-1998 1.6587 18CrNiMo7-6 or

1.6587H 18CrNiMo7-6H

Werkstoff 1.6587 18CrNiMo7-6 or 17CrNiMo6

DIN 17210 17CrNiMo6

Great Britain BS970: PART 3: 1991 820M17/822M17

BS970: 1955 - EN354/EN355

U.S.A. SAE 4317

AISI 4317


Chemical Composition (%):

Carbon 0.15-0.20

Silicon 0.4 max

Manganese 0.40-0.60

Phosphorus 0.04 max

Sulphur 0.04 max

Chromium 1.50-1.80

Molybdenum 0.25-0.35

Nickel: 1.40-1.70


Process: EAF+LF+VOD+Forged+Heat Treatment(optional)




Hot Forged: 80mm-1200mm



Black, Peeled (K12), Cold Drawn, Turned & Polished (H10, H11), Precision Ground (H9, H8)


Heat Treatment:
Hot working: 850-1150oC
Case hardening: Double hardeningoC
Carburising: 900-950oC
Soft annealing: 650-700oC
Surface hardening: 800-930oC
Tempering: 150-210oC


Ultrasonic test: According to SEP 1921-84 3C/c


Certificate of Quality: issued in English, in addition the normal terms, production process, the mechanical property (yield strength, tensile strength, elongation and hardness), forged ratio, UT test result, Grain size, heat treatment methods and the sample of is shown on the Certificate of Quality.


Marking: Heat No. will be cold stamped and Steel grade, diameter (mm), length (mm), and the manufacturer LOGO and weight (kg) is painted

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