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Low temperature performance nickel alloy steel 11MnNi5-3

11MnNi5-3 is a nickel alloy steel with low temperature performance, and 11MnNi5-3 is a nickel alloy steel plate for pressure equipment.

Nickel alloy steel 11MnNi5-3 heat treatment / delivery state:
11MnNi5-3 steel plate is usually delivered in normalized, normalized + tempered state.

11MnNi5-3 steel executive standard EN 10028-4.

11MnNi5-3 alloy steel flaw detection level: first-level flaw detection, second-level flaw detection, third-level flaw detection.

Analysis of chemical element composition of nickel alloy steel 11MnNi5-3:

C Si Mn P S Ni Nb V Alt
≤0.14 ≤0.5 0.7-1.5 ≤0.025 ≤0.010 0.3-0.8 ≤0.05 ≤0.05 ≥0.02

Composition Note: Cr+Cu+Mo≤0.5.

Mechanical properties of 11MnNi5-3 steel:

Thickness Mechanical properties
≤30mm ReH(MPa) ≥285  
Rm(MPa) 420-530  
A(%) ≥24  
Impact temperature -60  
Akv(J) ≥40 Longitudinal
Delivery Status Normalized, normalized + tempered
>30-50mm ReH(MPa) ≥275  
Rm(MPa) 420-530  
A(%) ≥24  
Impact temperature -60  
Akv(J) ≥40 Longitudinal
Delivery Status Normalized, normalized + tempered
>50-80mm ReH(MPa) ≥265  
Rm(MPa) 420-530  
A(%) ≥24  
Impact temperature -60  
Akv(J) ≥40 Longitudinal
Delivery Status Normalized, normalized + tempered

11MnNi5-3 nickel alloy steel impact energy value:

Grade Thickness Impact power value (KV /J) at the following test temperatures
Direction 20 0 -20 -40 -50 -60 -80 -100 -120 -150 -170 -196
11MnNi5-3 ≤80mm Longitudinal 70 60 55 50 45 40 - - - - - -
Horizontal 50 50 45 35 30 27 - - - - - -

11MnNi5-3 steel technical standard:
The size, shape and allowable deviation of the 11MnNi5-3 steel plate shall meet the requirements of 2007+A1:2009 in EN10028-1.

Nickel alloy steel 11MnNi5-3 process flow:
Converter/electric furnace steelmaking—LF furnace refining→VD furnace vacuum degassing—continuous casting/die casting/electroslag—cleaning and heating—rolling—flaw detection—heat treatment—steel plate finishing—sampling—performance inspection.

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