TU 42 BT

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France AFNOR NF TU42BT Steel tubes. Seamless tubes for ferritic non alloy and alloy steel heat exchangers. Dimensions. Technical delivery conditions and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: TU42BT / TU 42 BT

Category	Grade	Standard	Region/Area	Standard Content
Metals	TU 42 BT	NF A49-215	France	Steel tubes. Seamless tubes for ferritic non alloy and alloy steel heat exchangers. Dimensions. Technical delivery conditions

Chemical composition(mass fraction)(wt.%) of the TU 42 BT

Element	Min	Max	Similar
Si	0.1000	0.3500	-
S	-	0.0400	-
P	-	0.0400	-
Mn	0.3000	1.0500	-
Cu	-	0.3000	-
C	-	0.2200	-
Si	-	0.4000	-
S	-	0.0400	-
P	-	0.0400	-
Mn	-	1.1500	-
Cu	-	0.3000	-
C	-	0.2200	-

Mechanical Properties of steel grade TU 42 BT

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)
936 (≥)	139 (≥)	43	42	14	Solution and Aging, Annealing, Ausaging, Q+T,etc	241

Physical Properties of steel grade TU 42 BT

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
41	-	-			0.32	-
515	679	-	44.3	241		-
557	-	32	22.2			444	122

Heat Treatment of steel grade TU 42 BT

Heat treated : 1252°C - 1544°C

Technological Curves of steel grade TU 42 BT

No Curve

Cross Reference Table (Equivalent Grade) of TU 42 BT

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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