Duplex Steel Buttweld Pipe Caps S31803 F51

He Bei GuangHao Pipe Fittings Co .,LTD Specializing in the production of steel pipe and pipe fittings
Main production:Buttweld Steel Pipe Fittings,Industrial Flanges,Steel Pipes,Buttweld Elbows,Buttwel Tees,Forged fittings,etc.
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Forged Fittings/Buttweld Steel Pipe Fittings Type: Elbow, cross, street elbow, tee, coupling, half coupling, cap, plug, bushing, union, outlet, sage nipple, bull plug, reducer insert, pipe nipple etc.

The following are the properties of 31803:
 Stainless ferritic-austenitic Cr-Ni-Mo steel with nitrogen addition.
 High corrosion resistance, especially against stress corrosion cracking in solutions containing chloride.
 Good strength properties.
 Resistant to intergranular corrosion in the temperature range up to 300°C.
 Heat treatment subsequent to welding not necessary.
 Surface condition for optimum corrosion resistance: pickled, heat treated free from scale or machined.
Application
Components in the chemical industry, e.g. separator and heat exchanger parts, from the paper industry, oil and gas production, compressor parts, seawater desalination plants.
Technical Info

C	Si	Mn	Cr	Mo	Ni	N
0.025	0.60	1.30	22.60	3.20	5.80	0.17

EN / DIN	ASTM	UNS	AFNOR
<1.4462 > X2CrNiMoN22-5-3	A240	S31803	Z2CND22-5 Az

Hot Forming
Forging
1200 to 950°C / Air cooling
Heat Treatment
Solution annealing:
1020 to 1100°C
Water , air (thickness below 2mm)
Structure
Ferrite + Austenite
Mechanical Properties
Condition: solution annealed

Product	Dimension Size mm	0.2% proof stress N/mm2 min.	Tensile strength N/mm2	Elongation A5 % min. L Q T	Impact strength (ISO-V) J min. L Q T
St	≤ 160	450	650 – 880	25 – – – –	100 – – – –
Bl	≤ 75	460	640 – 840	252) 252) – –	90 60 – –

St = Bar ,
Bl = Sheet or plate
L = Longitudinal, Q = Transverse, T = Tangential
1) For sheet or plate < 3mm = A80mm specimen
The values for other products and dimensions shall be established by agreement.
Hight Temperature Properties
Condition: solution annealed

0.2% yield strength N/mm² min.	Temperature
	100°C	150°C	200°C	250°C
	360	335	315	300

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