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321F20 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 321F20

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AFNOR 321F20

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This page is mainly introduced the 321F20 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 321F20,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Steel tubes. Seamless austenitic steel tubes for use at high temperatures. Dimensions (with normal tolerances). Technical conditions of delivery

Steel Garde:321F20
Type:Stainless Steels
Country:France
Standard:AFNOR

Standard Number:

ITEM	Standard Number	Descriptions
1	NF A 49-214	Steel tubes. Seamless austenitic steel tubes for use at high temperatures. Dimensions (with normal tolerances). Technical conditions of delivery

Application:Steel tubes. Seamless austenitic steel tubes for use at high temperatures. Dimensions (with normal tolerances). Technical conditions of delivery

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
Z6CNT18-10	AFNOR	France
Z6CNT18-10B	AFNOR	France
Z6CNT18-10F	AFNOR	France
TUZ6CNT18-10	AFNOR	France
TSZ6CNT18-10	AFNOR	France
Z6CNT18.12B	AFNOR	France
Z6CNNb18-12B	AFNOR	France
Z6CND17.12B	AFNOR	France
316F20	AFNOR	France
Z6CNNb18.12B	AFNOR	France
347F20	AFNOR	France
20X12BHMΦ	GOST	Russia
15X12BHMΦ	GOST	Russia
18X12BMBΦP	GOST	Russia

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.04	0.08
Si		1.00
Mn		2.00
P		0.040
S		0.030
Cr	17.00	19.00
Ni	11.00	13.00
Mo
B	0.0015	0.0060
Ti	4×C	0.60

Mechanical Properties

Tensile strength	954～409	σb/MPa
Yield Strength	493	σ 0.2 ≥/MPa
Elongation	97	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	550～152	-
HRC	30	-

Physical Properties

Thermal expansion	92-32	e-6/K
Thermal conductivity	71-89	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	2765-7813	째C
Density	3521-5787	kg/m³
Resistivity	0.50-0.60	Ohm.mm²/m

Heat Treatment Regime

Annealing	Quenching	Tempering	Normalizing	Q & T
√	√	√	√	√

Size Availability

Steel Grade	Specification	Processing range(mm)
321F20 Stainless Steels	Round Bar and Hollow Bar	Φ1 to Φ2000
	Square and Flat Steel	Φ10 to Φ100
	Plate and Sheet	0.08-800(Thickness)10-1500(Width)Length
	Tube or Pipe	OD:Φ4-410; WT:1-35 mm; Lenght:10-12000
	Coil and Strip Steel	THK:0.1mm Width:1500mm
	Forged	Ring/Cylindrical/Disk