17crni6-6 1.5918 Engineering Steels with High Quality

• Type: Flat
• Standard: DIN
• Composition: Ferrous Steel Scrap
• Technique: Hot Forged or Hot Rolled
• Shape: Round,Flat or Square
• Surface Treatment: Black Surface,Grinded or Peeled
• Model NO.: 17CrNi6-6 1.5918
• Special Use: Engineering Steels
• Application: Structural Steel Bar
• Size Range: Round Bar:Dia12~420mm Flat Bar:2~420 X 30~1500mm
• Smelting Process: Ef, Eaf, ESR
• Delivery Condition: Hot Rolled, Forged, Annealed,Quenched and Tempered
• Surface Condition: Black Surface, Grinded,Peeled,Milled,Polished
• Transport Package: Seaworth Packing
• Specification: Round Bar: Dia12~420mm Flat Bar: 2~420 X 30~1500mm
• Trademark: CHENGQUAN
• Origin: Huangshi, Hubei
• HS Code: 7228600000
• Production Capacity: 5000tons/Year

Product Description

Introduction
Structural, pressure vessel and engineering steels.

Application
Alloyed case hardening steel for highly strained parts and good toughness at core tensile strength of 900 - 1200 N/mm². Driving bevel gears, crown wheels, gears, shafts, bolts for automotive and gear components.

All Grades Comparison

DIN	EN
1.5918	17CrNi6-6

Quality Standard
EN 10084: 2008 Case hardening steels. Technical delivery conditions
EN 10263-3: 2001 Steel rod, bars and wire for cold heading and cold extrusion. Technical delivery conditions for case hardening steels

Chemical Composition(%)

C	Mn	Si	P	S	Cr	Ni
0.14-0.20	0.50-0.80	0.40 max	0.025 max	0.035 max	1.40-1.70	1.40-1.70

Mechanical Properties(T=20°C if not differently stated)

Process	Diameter(mm)	Tensile Strength Rm (Mpa)	Hardness (HB)
Treated to improve shearability	/	/	255 max
SOFT ANNEALED	/	/	229 max
Treated for strength	/	/	175-229
Treated for ferrite and pearlite structure and hardness range	/	/	156-207
QUENCHED AND TEMPERED	16 max	1200 min	/
QUENCHED AND TEMPERED	16-40	1100 min	/
QUENCHED AND TEMPERED	40-100	900 min	/

HEAT TREATMENT:

Process	Temperature(°C)	Media
Forging or hot rolling	1100-850	/
Normalising	850-880	air
Soft annealing	650-700	furnace
Carburising	880-980	/
Core hardening	830-870	oil
Intermediate annealing	630-650	/
Case hardening	780-820	oil
Tempering	150-200	/

Mill′s test certificate:
EN 10204/3.1 with all relevant data reg. chem. composition, mech. properties and results of testing.