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Quality C45 C45E – C45R
Category Special steel, carbon steel Special steel, carbon steel
Standard ref.
EN 10083 EN 10083
Werkstoff nr. 1.1191 1.1201

Description

Among the hardening and tempering special steels, C40E and C40R are the most commonly used steels in Italy, and used to produce a vast range of mechanical components: axles, shafts, gears, pins, flanges etc. They are normally supplied as rolled bars and forged bars, though it is not uncommon to find these special steels supplied as drawn bars and peeled bars.

Chemical composition C45E (%)

C Mn P S Cr Si Mo Ni Cr+Ni+Mo
min max min max min max max max max max max max
0,42 0,50 0,50 0,80 0,040 0,025 0,40 0,40 0,10 0,40 0,63

Chemical composition C45R (%)

C Mn P S Cr Si Mo Ni Cr+Ni+Mo
min max min max min max max max max max max max
0,42 0,50 0,50 0,80 0,020 0,040 0,025 0,40 0,40 0,10 0,40 0,63

Mechanical characteristics C45E e C45R

Hot rolled normalized
of the specimen in mm)
≤ 16 > 16 ≤ 100 > 100 ≤ 250
Yield Limit, Rp0,2 (MPa) min 340 305 275
Tensile Strength
R
m (MPa)
min 620 580 560
max 785 770 760
Elongation A (%) min 14 16 16
Resilience Kv (J) min 28 20 18
Hardness HB min 185 175 165
max 245 235 230

Matches table C45E e C45R

Italiy (UNI)
Europe (EN)
Germany (DIN)
France (AFNOR)
United Kingdom (BS)
USA (AISI/SAE)
C45 C45E – C45R Ck45 – Cm45 XC48H1 – XC48H1u 080M46 1045
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