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NC20TA

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NC15Fe7TA X45CrSi9-3
#NC20TA

Description

France AFNOR NF A 35-579, NC20TA Specialsteel Valve steels and alloys for internal combustion engines and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: NC20TA
Category Class Grade Standard Country Application
Steel GradesSpecialsteel NC20TA AFNOR France Valve steels and alloys for internal combustion engines

Chemical composition(mass fraction)(wt.%) of the NC20TA

C Si Mn P S Cr Ni Mo Al Ti Fe Co Cu B
0.04 -0.10 ≤1.00 ≤1.00 ≤0.020 ≤0.015 18.00 -21.00 ≤remaining ≤ ≥ 1.00 -1.80 1.80 -2.70 ≤3.00 ≤2.00 ≤0.20 ≤0.0080

Mechanical Properties of steel grade NC20TA

Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV/Ku (J)		 Elongation
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition Brinell hardness (HBW)
288 (≥) 467 (≥) 32 21 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 234

Physical Properties of steel grade NC20TA

Temperature
(°C)		 Modulus of elasticity
(GPa)		 Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)		 Specific thermal capacity
(J/kg·°C)		 Specific electrical resistivity
(Ω mm²/m)		 Density
(kg/dm³)		 Poisson’s coefficient, ν
31 - -     0.11 -  
796 452 - 44.3 444   -  
371 - 32 31.2   124 333

Heat Treatment of steel grade NC20TA

Heat treated : 1934°C - 1699°C

Technological Curves of steel grade NC20TA

Cross Reference Table (Equivalent Grade) of NC20TA

Grade Standard Country Application
NC20TA

Relevant standard of NC20TA

NF A 35-579 Valve steels and alloys for internal combustion engines NF-A-35-579.pdf
NC15Fe7TA X45CrSi9-3
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