C45 STEEL

Low-alloy steel for toughening, hard to weld, easy to make a treatment.

Its purpose:

on average overburdened machines' elements or devices such as spindles, axles, arbors, untempered gears, electric motor's arbors, shields, screws, arms, knives, corkscrews, naves, rods, cylinders, and rotor bars. The products can be tempered subaerially getting the toughness up to 30-35 HRC.

Chemical composition [%]

C MN SI P S CR NI MO W V AL CU
0,42-0,5 0,5-0,8 0,1-0,4 max 0,04 max 0,04 max 0,3 max 0,3 max 0,1 - - - max 0,3

 

Analogs:

 

POLISH
NORMS
W.NR EN AISI RUSSIA
(GOST)
OTHERS
45 1.0503 C45 1045 45 12050

 

Analogs:

 

WELDING HARD TO WELD  
forging YES temp. 850 - 1100 [°C]
rolling YES temp. 850 - 1100 [°C]
nitriding NO -
quenching YES temp. 820 - 860 [°C]
tempering YES temp. 550 - 660 [°C]
Soft annealing YES temp. 650 - 700 [°C]

 

Mechanical properties:

 

Tensile strength Rm 560-850
Elongating A5 (%) 14-17
Necking down Z (%) 35-45
Yield strength Re 275-490
Breaking work KU2 (J) >=25
Compression modulus of elasticity E (GPa) 198-207
Toughness (after softening) HB <=229

 

 

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