Steel 50 characteristics

Steel grade 50 is a structural, medium-carbon unalloyed steel used to manufacture clutch parts, springs, shafts, shares and other friction products.

Classification: High-quality structural carbon steel.

Products: Flat-rolled steel, including shaped.

 

Chemical composition of steel 50 according to ladle sample in accordance with DSTU 7809 and GOST 1050, %

С

Si

Mn

S

P

Cr

0.47-0.55

0.17-0.37

0.5-0.8

<0.04

<0.035

<0.25

 

Mechanical properties of steel 50 after normalising

Minimum yield strength, MPa

Minimum temporary resistance, MPa

Minimum relative elongation, %

Minimum relative reduction, %

375

630

14

40

 

Steel 50 analogues

US

1049, 1050, 1055, G10490, G10500, G10550

Germany

1.0535, 1.0540, 1.1206, 1.1213, C50, C50D, C50E, C55 Cf53, Ck50

Japan

S40C, S50C, S53C, S55C

France

 

2C50, C45E, C50E, C54, XC48H1, XC48H1TS, XC48TS, XC50

UK

060A52, 070M55, 080M50, C50E, C55

EU

1.0535, 1.0540, 1.1206, 1.7035, 41Cr4, C50, C50E, C53, C55

Italy

C50, C50E, C50R, C53, C55

Belgium

C53

Spain

C50E

China

 

50, 55, SM50

Sweden

1655, 1674

Bulgaria

50C50E

Hungary

C50E

Poland

55, D50

Romania

OLC50AT, OLC50X

Czech Republic

12051, 12060

Austria

1050

Australia

1035

South Korea

SM50C

 

Application

Steel grade 50 is actively used to manufacture parts operating under friction and high loads, including gear wheels, couplings, tracks, gearboxes, rolls, rods, axles, shafts and shafts , bandages and springs of shares and springs .

 

Welding

Steel grade 50 is difficult to weld. Heat treatment is recommended before and after welding. The main welding methods are butt resistance welding and manual arс welding.

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