40Cr/41Cr4/WNr1.7035/1.7045/41Cr4/42Gr4/42C4/ 38Cr4/41Cr4/ 5140/SCr440(H)/ SCr440/(SCr4)41Cr4/SCr4 R683
Dia: 10mm-1200mm

40Cr/41Cr4/WNr1.7035/1.7045/41Cr4/42Gr4/42C4/ 38Cr4/41Cr4/ 5140/SCr440(H)/ SCr440/(SCr4)41Cr4/SCr4 R683

APPLICATIONS: 

Used for manufacture big sized important Quenched-and-Tempered parts which request good toughness and high strength.such as top load shaft in heavy-duty machinery.

 1.Accessories with moderate-blow and moderate duty by hardening and tempering

2.Accessories wearable and case-hard by high-frequency surface hardening

3.Accessories with moderate-blow and over loading property by quenching and average tempering

4.Accessories with low blow, wearable and over loading by quenching and lonnealing

5.Transmission accessories with biggish measure and superior low-temperature flexibility by nitro cementation

6.Plastic mouding meadium sized application.

RELATED SPECIFICATIONS: 

Germany         DIN 41Cr4/42Gr4

                 WNr1.7035/1.7045

France            NF 42C4/ 38Cr4/41Cr4

Great Britain       EN 18 BS970 530A40 /530M40/41Cr4

USA              ASTM/ AISI/ SAE 5140

Italy              UNI 41Cr4

Sweden           SS 2245

Belgium           NBN 42Cr4

Japan             JIS  SCr440(H)/ SCr440/(SCr4)

International ISO   41Cr4/SCr4 R683

Chemical Composition (%):

Carbon       0.37-0.44

Silicon        0.17-0.37 

Manganese    0.50-0.80 

Phosphorus    0.035 max 

Sulphur       0.035 max 

Chromium     0.80-1.10 

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

SIZE RANGE:

Round: 

Hot Rolled:  10mm-500mm 

Hot Forged:  80mm-1200mm 

Flat:

Hot rolled: Thickness: 20-130mm  Width: less than 610mm 

Hot forged: Thickness:150-600mm Width: up to 1600mm 

SURFACE FINISHES: 

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

Test: 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