Alloy Special Steel Grade 20CrNiMo13-4 / En 1.6660 Steel Round Bar

• Type: Alloy Steel Bar
• Standard: AISI, ASTM, DIN, JIS
• Composition: Cr-Ni-Mo
• Model NO.: EN 1.6660
• Technique: Hot Rolled
• Shape: Bar
• Surface Treatment: Hot Rolled
• Special Use: High-strength Steel Plate, Wear Resistant Steel, Silicon Steel, Cold Heading Steel, Free Cutting Steel, Mold Steel
• Application: Structural Steel Bar
• Length: 6m or Cutting Any Length as Request
• Other Shape: Flat, Square, Hexagonal
• Other Products: Pipe, Plate, Coil
• Service: Cutting, Heat Treatment
• Transport Package: Standard Packing for Export
• Specification: 10 - 350mm in stock
• Trademark: DELTA
• Origin: China
• HS Code: 7214200000
• Production Capacity: 50000kgs

Product Description

PRODUCTS SPECIFICATION

Alloy Special Steel Grade 20CrNiMo13-4 / EN 1.6660 Steel Round Bar

Products Specification

 

Products Name	20CrNiMo13-4 / 1.6660 Alloy Steel Round Bar
Diameter	10 - 320mm
Length	6m or custom cutting any length as request
Type	Hot Rolled
Brand	BAOSTEEL DELTA DONGBEI HUAXI SHAGANG.etc
MOQ	1 Ton
Loading Port	Shanghai Port
Packing	packing by steel wire rope
Deliver time	5 - 7 days  for stock materials
Other Grade	Q195,Q235,10#,20#,35#,45#,Q215,Q345,12Cr1Mov, 15CrMo,304,316,20Cr,40Cr,20CrMo,35CrMo,42CrMo, 40CrNiMo,GCr15,65Mn,50Mn,50Cr,3Cr2W8V,20CrMnTi,5CrMnMo
Standard	ASTM GB EN DIN
Application	Structure and Industrial

 

Regular Standard Size of our 20CrNiMo13-4 Round Bar in Stock

 

Standard Diameter

10 12 15 18 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 120 130 140 150 160 180 200 210 220 230 250 270 300

MATERIAL DESCRIPTION

1. 1.6660 Application

• Gears subjected to high stresses, diverse parts subject to wear and fatigue in service.
• In the quenched and tempered condition: safety-critical parts.

2. 1.6660 Characteristics

• High mechanical properties.
• Good fatigue strength.
• After carburising, quenching and tempering, the surface hardness is around 730 HV.
• Good toughness of the carburised layer.
• For some carburising applications, oil quenching can be replaced with gas pressure quenching in order to minimise distortion due to the heat treatment.

3.All Grades Comparison

DIN	EN
1.6660	20NiCrMo13-4

4.Quality Standard

EN 10084 2008 Case hardening steels

5. 1.6660 Chemical Composition(%)

C	Mn	Si	P	S	Cr	Ni	Mo
0.17-0.22	0.30-0.60	0.40 max	0.025 max	0.035 max	0.80-1.20	3.00-3.50	0.30-0.50

6.Hardness requirements for products delivered in the conditions

Process	Hardness
treated to improve shearability	277HB max
soft annealed	255HB max
treated to hardness range	207HB-255HB
treated to ferrite-pearlite structure and hardness range	197HB-241HB

7.Conditions for heat treating test bars and treatment of the steels:

Process	Temperatures (oC)
End quench test	850
Carburizing	880-980
Core-hardening	825-880
Case-hardening	800-850
Tempering	150-250

 

8.Mill′s test certificate:

EN 10204/3.1 with all relevant data reg. chem. composition, mech. properties and results of testing.

 

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