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C50R

C50R  EN10083-2:2002, Number: 1.1241
 
Comparison of steel grades
JUS (Č.16303)
DIN (Cm50)
BS (080M50)
GOST -
AISI -
UNI -
NF -

 

Under EN10083-2:2002 standard C50R Alloy steel  properties and heat treatment forgings, Including C50R Alloy steel application and specifications, We have all specifications,Including C50R Alloy steel bars, rod, Plate, bar, square steel, rectangular steel,forgings, BEBON CHINA can own production and sales.

C50R Alloy steel  Chemical analysis -% by mass

Hemical  elements C Si 
max.
Mn P max. S Cr
max.
Mo
max.
Ni
max.
Cr+Mo+Ni
max.
%, by mass
0,47-0,55
0,40 0,60-0,90 0.025 0,020-0,040 0,40 0,10 0,40 0,63
Permissible deviation ± 0.02 +0,03 ± 0,04 + 0.005 ±   0.005 +0,05 +0,03 +0,05 -
  Jominy’s hardenability band
Distance in mm from quenched end Hardness in HRC  (mm)
Symbol mm 1 2 3 4 5 6 7 8 9 10 11 13 15 20 25 30
+H max. 63 62 61 60 58 55 50 43 36 35 34 33 32 31 29 28
min. 56 53 44 34 31 30 30 29 28 27 26 25 24 23 20 -
  Tentative values for the ’’C’’ scale Rockwell hardness for special steel grades with restricted hardenability scatter bands (+HH and +Hl grades)
Symbol Distance in mm from the quenched end HRC hardness
1 4 5
+HH5 +HH15 +HL5 +HL15 - - 40 to 58
58 to 63 - 40 to 58
- - 31 to 49
56 to 61   31 to 49
  Maximum hardness for products to be supplied in the ’’treated to improve shearability (+S)’’ or ’’soft annealed (+A)’’ condition
  +S  (HB max.) +A (HB max.)
255 217
  Mechanical properties in the quenched and tempered condition (+QT)
 
Mechanical properties for the ruling sections (see prEN10083-1:2002, Annex A) with a diameter (d) or for flat products trickness (t) of
d  ≤ 16mm t ≤ 8mm 16mm < d  ≤ 40mm 8mm < t  ≤  20mm 40mm < d  ≤ 100mm 20mm < t  ≤  60mm
Re min (MPa) 520 460 400
Rm (MPa) 750-900 700-850 650-800
A  min. (%) 13 15 16
Z  min. (%) 30 35 40
KV min. (J) -
                  -
                   -
  Mechanical properties in the normalized condition – (+N)
 
Mechanical properties for  products with a diameter (d) or, for flat products trickness (t) of
d  ≤ 16mm t ≤ 16mm 16mm < d  ≤ 100mm 16mm < t  ≤  100mm 100mm < d  ≤ 250mm 100mm < t  ≤  250mm
Re min. (MPa) 355 320 290
Rm min. (MPa) 650 610 590
A  min. (%)
                 12
                14
                 14
  Heat treatment conditions
Quenching 0C Quenching agent Tempering temperature 0C  Hardening temperature in the end quench test 0C Normalizing 0C
810-850 Oil or water 550-660 8500±5 830 to 890

Source:

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