TU Z 6 CNNb 18 12

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France AFNOR NF TUZ6CNNb1812 Steel tubes. Seamless or longitudinally welded stainless steel tubes for exchangers in aircraft construction. Dimensions. Technical delivery conditions and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: TUZ6CNNb1812 / TU Z 6 CNNb 18 12

Category	Grade	Standard	Region/Area	Standard Content
Metals	TU Z 6 CNNb 18 12	NF A49-207	France	Steel tubes. Seamless or longitudinally welded stainless steel tubes for exchangers in aircraft construction. Dimensions. Technical delivery conditions

Chemical composition(mass fraction)(wt.%) of the TU Z 6 CNNb 18 12

Element	Min	Max	Similar
Si	-	1.0000	-
S	-	0.0300	-
P	-	0.0400	-
Ni	10.5000	13.0000	-
Nb	-	1.0000	-
Mn	-	2.0000	-
Cr	17.0000	20.0000	-
C	-	0.0800	-

Mechanical Properties of steel grade TU Z 6 CNNb 18 12

Yield R_p0.2 (MPa)	Tensile R_m (MPa)	Impact KV/Ku (J)	Elongation A (%)	Reduction in cross section on fracture Z (%)	As-Heat-Treated Condition	Brinell hardness (HBW)
567 (≥)	777 (≥)	21	14	13	Solution and Aging, Annealing, Ausaging, Q+T,etc	331

Physical Properties of steel grade TU Z 6 CNNb 18 12

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
13	-	-			0.23	-
321	479	-	13.3	322		-
221	-	11	33.2			323	314

Heat Treatment of steel grade TU Z 6 CNNb 18 12

Heat treated : 1472°C - 1277°C

Technological Curves of steel grade TU Z 6 CNNb 18 12

No Curve

Cross Reference Table (Equivalent Grade) of TU Z 6 CNNb 18 12

Grade	Standard	Country	Application
ASTM 5140
AISI 201
AISI 202
1.2767
17-4PH
AISI 1052
AISI 416Se
AISI 1330
AISI 205 Stainless Steel
AISI A10
AISI A2
AISI A3
AISI A4
1.0036
1.0037
SAE J403
UNS G10100
AMS 4924
ASTM A36
Electrode 100S-1

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