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AISI 4118 Scm420 18crmo4 DIN 1.7243 18CD4 708m20 Tool Steel Bar

China AISI 4118 Scm420 18crmo4 DIN 1.7243 18CD4 708m20 Tool Steel Bar, Find details about China 18crmo4 Tool Steel, DIN 1.7243 Tool Steel Bar from AISI 4118 Scm420 18crmo4 DIN 1.7243 18CD4 708m20 Tool Steel Bar

Model NO.
KM-801
Special Use
Mold Steel, Cold Heading Steel
Size
130mm-1000mm (Optional)
Length
2m,3m,5.8m, 6m, 8m or as Required.
Delivery Time
7-30 Days
Loading Port
Shanghai
MOQ
3 Tons
Certificate
ISO, BV, SGS, Mill Test Certificate
Packaging Detail
Standard Sea-Worthy Package
Surface
Bright, Black
Price Term
Ex-Work, Fob, CFR, CIF, etc.
Specifications
Flat Bar, Round Bar, Angle Bar, Square Bar
Trademark
Kingmetal
Transport Package
Standard Sea-Worthy Package
Specification
130mm-1000mm (optional)
Origin
China (Mainland)
Model NO.
KM-801
Special Use
Mold Steel, Cold Heading Steel
Size
130mm-1000mm (Optional)
Length
2m,3m,5.8m, 6m, 8m or as Required.
Delivery Time
7-30 Days
Loading Port
Shanghai
MOQ
3 Tons
Certificate
ISO, BV, SGS, Mill Test Certificate
Packaging Detail
Standard Sea-Worthy Package
Surface
Bright, Black
Price Term
Ex-Work, Fob, CFR, CIF, etc.
Specifications
Flat Bar, Round Bar, Angle Bar, Square Bar
Trademark
Kingmetal
Transport Package
Standard Sea-Worthy Package
Specification
130mm-1000mm (optional)
Origin
China (Mainland)

AISI 4118 Scm420 18crmo4  DIN 1.7243 18CD4 708M20 tool steel bar

1.Supply Form & Size & Tolerance

Hot rolled bar:Φ6-Φ130mm,Length:3000-10000mm

Hot Forged round bar:Φ130-Φ1000mm,Length:3000-10000mm

Flat bar/Blcoks:Thickness :120-800mm xWidth:120-1500mm,Length:2000-6000mm

Surface FinishBlack-ForgedBlack-RolledTurned   GrindingPolishedPeeledCold Drawn
Tolerance(0,+5mm)(0,+1mm)(0,+3mm)Best h9Best h11Best H11Best H11

2.Chemical Composition

GradeCSiMnCrMoPS
18CrMo4/1.72430.15-0.21≤ 0.40.6-0.90.9-1.20.15-0.25≤ 0.025≤ 0.035
18CrMoS4/1.72440.15-0.21≤ 0.40.6-0.90.9-1.20.15-0.25≤ 0.0250.02-0.04

3.Relevant Standards

USAUKJapanFrance
4118708M20SCM42018CD4

4. Mechanical Property

Diameter d mm≤ 1616-4040-100
Yield Strength Mpa≥835≥685≥590
Tensile Strength Mpa1080-1370930-1300800-1150
Elongation, %≥9≥9≥10
Reduction of area ,%≥35≥35≥40
impact,J≥25≥31≥31

5.Forging

18CrMo4 forging temperature:950 - 1100°C,cooled as slowly as possible in the air or in sand after forged.

6.Heat Treatment

  • Normalizing:  870 - 900°C,Cooling in air
  • Soft Annealing:680 - 700°C,Cooling in furnace
  • Carburizing:880-980°C
  • Core-hardening:860-900°C,oil-polymer salt bath
  • Case-hardening:780-820°C,oil-polymer salt bath
  • Carbonitriding:860-950°C
  • Tempering:150-200°C

7.Surface Hardness

  • Soft annealed(+A):Max 207HB
  • Treated to hardness range(+TH):156-207HB
  • Treated to ferrite-pearlite structure and hardness range(+FP):140-187HB
TypeDistance mm1.535791113152025303540

+H		HRC Min3937343027242221-----
HRC Max47464542393735343129282726

+HH		HRC Min42403834312826252220---
HRC Max47464542393735343129282726

+HL		HRC Min3937343027242221-----
HRC Max44434138353331302725242322

8.Application

18CrMo4 case hardening steel is widely in gear components of all kind and cog wheels. Open die steel forgings for general engineering purposes.High and medium pressure steam pipes, headers and superheaters.

AISI 4118 Scm420 18crmo4 DIN 1.7243 18CD4 708m20 Tool Steel Bar
AISI 4118 Scm420 18crmo4 DIN 1.7243 18CD4 708m20 Tool Steel Bar
AISI 4118 Scm420 18crmo4 DIN 1.7243 18CD4 708m20 Tool Steel Bar



 

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