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20MnM0Ni4-5






20MnM0Ni4-5 EN 10250-3:1999
, Number: 1.6311   
Comparison of steel grades
JUS -
DIN 20MnM0Ni4-5
BS -
GOST -
AISI -
UNI -
NF -

 

20MnM0Ni4-5 steel grade is one of grade in En10028-2, which is non alloy and alloy steels with specified elevated temperature properties.
In accordance with en10020, 20MnMoNi4-5 steel grade is alloy special steels.
20MnM0Ni4-5 Grade delivery condition is normalized and tempered or quenched and tempered.
 
Bebonsteel could supply 20MnM0Ni4-5 steel grade in super thick steel plate for fabricators serving the oil and gas industry, heat exchangers, weldable pressure vessels and boilers

20MnM0Ni4-5 steel plate Chemical analysis -% by mass 

Chemical elements C Si Mn P max. S
max.
Cr Mo Ni** -
%, by mass 0,17- 0,23 £ 0,40 1,00-1,50 0.035 0.035 £ 0,50 0,45-0,60 0,40-0,80 -
Permissible deviation ± 0,02 + 0,03 ± 0,06 + 0,005 + 0,005 + 0,05 ± 0,06 ± 0,05 -


At the option the manufacturer the elements aluminium, titanium, vanadium and niobium may be added singly or in combination for grain control    purposes.  Elements not quoted in tables shall not be added intentionally to the steel without the agreement of the purchaser, except for the purpose 
of finishing the heat. For greater cross-sections up to 1,00 % Ni is admissible. Mechanical properties in the quenched and tempered condition

 

Thickness of ruling section tR
Diameter in mm tR ≤ 160mm   160< tR ≤330mm 330<tR≤660mm 
Re min. (N/mm2) 420   390 -
Rm min. (N/mm2) 580   550 -
A % min. l-longitudinal 17   17 -
tr -transverse 14   14 -
KV min (J) l-longitudinal 39   39 -
tr -transverse 24   24 -


1N/mm2=1MPa Heat treatment conditions 

 

Quenching temperature, 0C Tempering temperature, 0C
870 to 940 630 to 680

Quenching from hardening may be carried out in oil, water, or water  based solutions. Caution should be observed in the use of water  as a quenching medium  to avoid the risk of cracking the forgings

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Tags: 20MnM0Ni4-5

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