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20MnB5

20MnB5 EN 10083-3:2002, Number: 1.5530

 
Comparasion of steel grades
JUS -
DIN 21MnB5
BS -
GOST -
AISI -
UNI -
NF -

     






 

 

Under EN10083-3:2002 standard 20MnB5 steel plate/sheet properties and heat treatment forgings, Including 20MnB5 application and specifications, We have all specifications,Including 20MnB5 bars, rod, Plate, bar, square steel, rectangular steel,forgings, BEBON STEEL can own production and sales.

20MnB5 STTEL PLATE Chemical analysis -% by mass

Chemical elements C Si Mn P S - B
%, by masss 0,17 - 0,23 £ 0,40 1,10-1,40 max 0.025 max 0,035 - 0,0008-0,0050
Permissible deviation ± 0.02 ± 0,03 ± 0,05 + 0.005 +  0.005 - ± 0.03

20MnB5 STEEL SHEET Mechanical properties in the quen ched and tempered condition

 
d  ≤ 16mm oder t ≤ 8mm 16mm < d  ≤ 40mm 8mm < t  ≤  20mm 40mm < d  ≤ 100mm 20mm < t  ≤  60mm 100mm <  d  ≤ 160mm 60mm < t  ≤  100mm 160mm < d  ≤  250mm 100mm < t  ≤  160mm
Re min (MPa) 700 600 - - -
Rm (MPa) 900-1050 750-900 - - -
A  min. (%) 14 15 - - -
Z  min. (%) 55 55 - - -
KV min. (J) 60 60 - - -

Jominy’s hardenability band

Distance in mm from quenched end Hardness in HRC
mm 1,5 3 5 7 9 11 13 15 20 25 30 35 40 45 50
+H max. 50 49 49 49 47 45 43 41 33 27 - - - - -
min. 42 41 40 37 30 22 - - - - - - - - -

Heat treatment conditions – informative

Hardening temperature in the end quench test Quenching temperature Quenching in Tempering temperature
9000±50C 880-920 0C   Voda (water) 400-600 0C

Tvrdoća u stanjima termičke obrade

  Obrađeno za sposobnost sječenja u hladnom stanju (+S cold chesring) HB max. Mekožareno (+A soft annealing) HB max.
- Shearable in the untreated condition - Condition +A is not applicable for boron steels

Annex C (informativno) Reference valuse for the maximum diameter at a certain core hardness of steels with boron

Hardening temperature 0C Core hardness * HRC Approximate maximum diameter mm
 
Water Oil
 
900 34 32 25

For 80% martensite

Source:

Tags: 20MnB5

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