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Duplex Alloy Steel Equal Tee A815 S32750 Butt-Weld Fitting Seawater Desalination System

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Duplex Alloy Steel Equal Tee A815 S32750 Butt-Weld Fitting Seawater Desalination System

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Brand Name :	YUHONG
Model Number :	A815 S32750 Equal Tee
Certification :	ABS, GL, DNV, NK, PED, ISO 9001-2015
Price :	Negotiation
Payment Terms :	T/T, L/C at sight
Supply Ability :	10000 TONS PER MONTH
Delivery Time :	Depends on quantity

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Duplex Alloy Steel Equal Tee A815 S32750 Butt-Weld Fitting Seawater Desalination System

Duplex Alloy Steel Equal Tee A815 S32750 Butt-Weld Fitting Seawater Desalination System

Overwiew

S32750 stainless steel has high strength, corrosion resistance and stress corrosion cracking resistance, and is suitable for high strength and corrosion resistant structural parts and components in the marine, chemical, oil and gas industries. The material's resistance to chloride ion stress corrosion cracking is better than other stainless steels, so it is suitable for seawater environments.

S32750 stainless steel can be subjected to heat treatment processes, including solid solution and water quenching. The solid solution temperature is 1020-1100 ℃, holding time is 1-2 hours; water quenching followed by annealing treatment, annealing temperature is 700-800 ℃, holding time is 2-4 hours.

Mechanical Properties of ASTM A815 UNS S32750

Grades	Density (g/cm 3)	Density (lb/in 3)	Melting Point (°C)	Melting Point (°F)
UNS S32750 Pipe Fittings	7.8	0.281	1350	2460

Chemical Composition of Duplex Steel: S31803/S32205/S32750/S32760

EL.	S31803	S32205	S32750	S32760
C	≤0.030	≤0.030	≤0.030	≤0.030
Mn	≤2.00	≤2.00	≤1.20	≤1.00
P	≤0.030	≤0.030	≤0.035	≤0.030
S	≤0.020	≤0.020	≤0.020	≤0.010
Si	≤1.00	≤1.00	≤0.80	≤1.00
Ni	4.5-6.5	4.5-6.5	6.0-8.0	6.0-8.0
Cr	21.0-23.0	22.0-23.0	24.0-26.0	24.0-26.0
Mo	2.5-3.5	3.0-3.5	3.0-5.0	3.0-4.0
Cu	-	-	≤0.50	0.50-1.00
N	0.08-0.20	0.14-0.20	0.24-0.32	0.20-0.30
W	-	-	-	0.50-1.00

Tensile and hardness requirements of Duplex Steel Reducer Tee

Item	S31803	S32205	S32750	S32760
Yield Strength min. MPa [ksi]	450 [65]	450 [65]	550 [80]	550 [80]
Tensile Strength min. MPa [ksi]	620 [90]	655 [95]	800 [116]	750 [109]
Elongation in 2" min. %	20.0	20.0	15.0	25.0
HBW, max	290	290	310	270

Characteristic of Duplex Steel Pipe fitting

1. Yield strength is more than twice as high as ordinary austenitic stainless steel, and has sufficient plastic toughness for molding.
2. Excellent resistance to stress corrosion rupture, especially in the chlorine ion environment.
3. Super duplex steel has a very high corrosion resistance, in some media, such as acetic acid, formic acid, and even higher can replace high-alloy austenitic stainless steel, and even corrosion-resistant alloys.
4. Good resistance to localized corrosion, and the alloy content of austenitic stainless steel, compared to its resistance to wear corrosion and fatigue corrosion than austenitic

Application

Sewage treatment pipeline
Oil refining
chemical fertilizer
Marine environments
seawater resistance quipment

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