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ASTM A928 Supler Duplex Welded Pipe High Strength ASTM A999

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ASTM A928 Supler Duplex Welded Pipe High Strength ASTM A999

Country/Region	china
City & Province	ningbo zhejiang

Product Details

ASTM A928 Supler Duplex Welded Pipe High Strength ASTM A999

Key Features :

UNS S32750 has excellent corrosion resistance in a wide variety of corrosive chemicals
Outstanding resistance to pitting and crevice corrosion in seawater and other chloride containing environments, with Critical Pitting Temperature exceeding 50°C
High strength compared to austenitic and 22%Cr duplex stainless steels
Excellent ductility and impact strength at both ambient and sub-zero temperatures
High resistance to abrasion, erosion and cavitation erosion
Excellent resistance to stress corrosion cracking in chloride containing environments
UNS S32750 is listed in NACE MR 01 75 for sour service
ASME Approval for Pressure Vessel application

AVAILABILITY
Bar, forgings, sheet, plate, pipe, tube, closed die forgings,
flanges and welding consumables.

MATERIAL SPECIFICATIONS
 UNS S32750 in various ASTM product form
specifications
 EN 10088-3 1.4410 (Grade X2CrNiMoN25-7-4)
 NORSOK MDS D51 to D55 D57 & D58
 ASTM A182 F53
 NACE MR01-75 (latest revision) / ISO 15156

Alloy 32750 to MLA-MPS-47V-BAR/FORG
ASTM A473 UNS S32750 Forgings
ASTM A182 Grade F53 UNS S32750 Forged Flanges
ASTM A240 UNS S32750 Sheet and Plate
ASTM A479 UNS S32750 Bar
NACE MR 01-75
EN 10088-3 1.4410
NORSOK

Chemical Specification of UNS S32750

Elements

Minimum

24.0

REMAINDER

3.00

0.24

6.00

0.20

0.50

Maximum

0.030

0.50

Basic Properties of UNS S32750 - Mechanical Properties

0.2% Proof Stress (N/mm² ) [ksi] minimum	550[79.8]
Ultimate Tensile Strength (N/mm²) [ksi] minimum	800 [116]
Elongation (%) minimum	25
Hardness (HBN)	270 max
Reduction of Cross Section Area (%)	45
Charpy V-notch Impact at ambient Temp (J) [ft.lb]	80min [59min]
Charpy V-notch Impact at -46°C (J) [ft.lb]	45av, 35min [33av, 25.8min]

Additional Testing
ASTM G48A Corrosion test at 40°C	No pitting and weight loss <4.0g/m²
Ultrasonic Testing	According to ASTM A388
Ferrite Content	35%-55%
Microstructure

Applications of UNS S32750

Chemical Process Industry:

Due to its high corrosion resistance UNS S32750 is ideal for use in Nitric Acid Processes, Polypropylene Production, PVC Production, Dioxide, Caustic Evaporators, Equipment.

Handling Organic and Fatty Acids.

Marine Industry and Shipbuilding:

Propellers and Shafts, Rudders, Shaft Seals, Pumps, Bolts and Fasteners, Valves, Instrumentation, Oil and Chemical Tankers

Oil and Gas Industry:

Pumps, Valves, Pipe, Vessels, Wellhead Equipment, Subsea Equipment

Pollution Control:

Fans and pumps, Wet Scrubbers, Incinerators

Pulp and Paper Industry:

Black liquor heater tubes, Digester Blow Valves, Rotary Feed Valves, I.D.Fans, Brownstock Washers, Precipitators, Bleaching Components

Food Industry:

Sugar Cane Centrifuges, Corn and Vegetable processing plant

Agrochemicals:

Fertiliser Production (Wet phosphoric acid)

Civil Engineering:

Sewage Treatment

Alloy Comparisons

Alloy Comparisons	S31803	S17400 (17-4PH)	718 ( ST )	S31254	Alloy 32750
0.2% Proof Strength (N/mm²), minimum	450	1070	550	300	550
Corrosion Rate (mm.y^-1) Seawater	<0.01	~1	<0.01	<0.01	<0.01
Corrosion Rate (mm.y^-1) 10% sulphuric acid at 80°C	<0.4	10	>1	1.5	<0.15
Corrosion Rate (mm.y^-1) Boiling 50% nitric acid	<0.15	<0.15	<0.15	0.4	<0.15
Wear Properties related to Hardness (HBN)	RC25	RC38	RC20	RC20	RC28