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20MnCr5

20MnCr5 EN 10084-1998, Number: 1.7147
 
Comparison of steel grades
JUS Č.4321
DIN 17210 20MnCr5
BS -
GOST -
AISI  SAE 5120
UNI 7846 20MnCr5
NF A35-551-86 20MC5

 

Under EN 10084-1998 standard 20MnCr5 steel plate/sheet  properties and heat treatment forgings, Including 20MnCr5 steel plate application and specifications,

We have all specifications,Including 20MnCr5 bars, rod, Plate, bar, square steel, rectangular steel,forgings

20MnCr5 steel plate Chemical composition (cast analysis)

Chemical elements C Si max Mn P max. S Cr - -
%, by mass 0,17-0,22 0,40 1,10-1,40 0,035 ≤ 0,035 1,00-1,30 -  
Permissible deviation ±  0,02 + 0,03 ± 0,05 + 0,005 + 0,005 ± 0,05 - -

20MnCr5 steel sheet Hardness limits for steel

Hardness HRC at a distance from quenched end of test piece (in milimetres) of
mm 1,5 3 5 7 9 11 13 15 20 25 30 35 40 45 50
+H max. 49 49 48 46 43 42 41 39 37 35 34 33 32 - -
min. 41 39 36 33 30 28 26 25 23 21 - - - - -
+HH max. 49 49 48 46 43 42 41 39 37 35 34 33 32 - -
min. 44 42 40 37 34 33 31 30 28 26 25 24 23 - -
+HL max. 46 46 44 42 39 37 36 34 32 30 29 28 27 - -
min. 41 39 36 33 30 28 26 25 23 21 - - - - -

 

Hardness requirements for products delivered in the conditions ’’treated to improve shearabilita’’ (+S), ’’anneled to maximum hardness requirements’’ (+A), ’’treated to hardness range’’ (+TH) or ’’treated to ferrite-pearlite structure and hardness range’’ (+FP)
Brinell hardness in the condition
+S max. +A max. +TH +FP
min. max. min. max.
255 217 170 217 152 201
  Non-metallic inclusions Requirements for microscopic degree of purity when tested in accordance with DIN 50 602 (method K) (valid for oxidic non-metallic inclusions)
D (mm) Bars Diameter d (mm) K Total characteristic value K (oxides) for the individual cast
140 < d  200 K 4 ≤ 50
100 < d ≤ 140 K 4 ≤ 45
70 < d ≤ 100 K 4 ≤ 40
35 < d ≤ 70 K 4 ≤ 35
17 < d ≤ 35 K 3 ≤ 40
8 < d ≤ 17 K 3 ≤ 30
 d ≤ 8 K 2≤ 35
  Conditions for heat treating test bars and treatment of the steels
End quenchh test Quenching, 0C Carbunnzing temperature, 0C Core-hardening temperature, 0C Case-hardening temperature, 0C Tempering, 0C
870 880 to 980 860 to 900 780 to 820 150 to 200

Source:

Tags: 20MnCr5

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