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Alloy 20

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Product Description

Features:

UNS N08020

Alloy 20 has excellent resistance in chemicals containing sulfuric acid, and has good resistance to environments containing chlorides, phosphoric acid and nitric acid. It contains niobium for stabilization against sensitization and resultant intergranular corrosion. It also has good mechanical properties and fabricability.

Applications:
Chemical, food, pharmaceutical and plastics industries, heat exchangers, mixing tanks, pickling equipment, synthetic rubber manufacturing equipment, pumps, valves and piping.

Forms of Alloy 20 Available at China Special Bolts
• Sheet
• Plate
• Bar
• Pipe & Tube (welded & seamless)
• Fittings (i.e. flanges, slip-ons, blinds, weld-necks, lapjoints, long welding necks, socket welds, elbows, tees, stub-ends, returns, caps, crosses, reducers, and pipe nipples)
• Wire

Chemical composition:

%	Fe	Ni	Cr	Cu	Mo	C	Mn	Si	P	S	Nb+Ta
Min	balance	32.0	19.0	3.0	2.0						8*C
Max	balance	38.0	21.0	4.0	3.0	0.07	2.00	1.00	0.045	0.035	1.00

Physical properties:

Density	8.08 g/cm3
Melting range	1357-1430℃

ASTM Specifications

Pipe Smls	Pipe Welded	Tube Smls	Tube Welded	Sheet/Plate	Bar	Forging	Fitting
B729	B464	B729	B468	B463	B473	B462	B366

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Alloy 20

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