2507 Seamless Stainless Steel Pipe
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 Description


Grade: 2507

Thickness: 16-308mm

OD: 10-426mm

Length: 6000mm or as customzied

Brand : BAOSTEEL,AOXIANG

Standard: ISO,ASTM,SUS,GB

Surface: NO.1,

Place of origin: China (mainland)

Payment terms : 30% TT as deposit or L/C at sight

 

ASTM/ASME:A240 - UNS S32750
EURONORM:1.4410 - X2 Cr Ni MoN 25.7.4
AFNOR:Z3 CN 25.06 Az
DIN/EN 1.4410,ASME SA-240
 
Duplex 2507 (UNS S32750) is a super duplex stainless steel with 25% chromium, 4% molybdenum, and 7% nickel designed for demanding applications which require exceptional strength and corrosion resistance, such as chemical process, petrochemical, and seawater equipment. The steel has excellent resistance to chloride stress corrosion cracking, high thermal conductivity, and a low coefficient of thermal expansion. The high chromium, molybdenum, and nickel levels provide excellent resistance to pitting, crevice, and general corrosion.
 

Chemical Properties

 

CCrNiMoNOthers
0.0202574.00.28S=0.001

 

Mechanical Properties


1. 2507 duplex stainless steel pipe mechanical properties at room temperature
 
Pipe:thickness≤20mm ;δb/MPa:800-1000 ,δ0.2/MPa:≥550 ,δ5/%:≥25 ,(HV):290
 
2 .2507 duplex stainless steel plate in the mechanical properties of room temperature of -200 ℃ :
 
/℃ δb/MPa
Room Temperature ≥530
Sheet 100 ≥450
200 ≥400
 
3. Mechanical properties of 2507 large-diameter seamless tube


Dia*thickness       δb/MPa  δ0.2/MPa   δ5/% (HV)
273.0mm×4.19mm   894      644          40      284
323.9mm×4.57mm   858      662          45       270
406.4mm×4.74mm   854      657          41       272
  

Corrosion
 
General Corrosion

1). high chromium and molybdenum content of 2507 makes it extremely resistant to uniform corrosion by organic acids like formic and acetic acid.
2). provides excellent resistance to inorganic acids, especially those containing chlorides.
3). can be used in dilute hydrochloric acid.
4). Pitting need not be a risk in the zone below the borderline in this figure, but crevices must be avoided.

 

Intergranural Corrosion
1). Low carbon content greatly lowers the risk of carbide precipitation at the grain boundaries during heat treatment.
2). Is highly resistant to carbide-related intergranular corrosion.

 

Stress Corrosion Cracking
1). Duplex structure of 2507 provides excellent resistance to chloride stress corrosion cracking (SCC).
2). Superior to 2205 in corrosion resistance and strength.
3). 2507 is especially useful in offshore oil and gas applications and in wells with either naturally high brine levels or where brine has been injected to enhance recovery.

 

Pitting Corrosion
1). Different testing methods can be used to establish the pitting resistance of steels in chloride-containing solutions.
 

Crevice Corrosion
1). Highly resistant to crevice corrosion. 

 

RFQ


Q1: Can I get some samples?
A: Yes, we can supply free sample, but the shipping cost should be paid by our customers.
Q2: How to make payments?
A: 30% T/T in advance , the balance before shippment.
Q3: How to confirm the Product Quality before placing orders?
A:You can get free samples for some products,you only need to pay the shipping cost or arrange a courier to us and take the samples. The third-party will be accepted.
Q4:What's your MOQ?
A:Our MOQ is 1.5 ton. 
Q5: How about delivery lead time?
A:Delivery lead time: About 7-15 days after payment confirmed. 
Q6:Is there a discount?
A:Different quantity has different discount.
Q7: Are you trading company or manufacturer ?
A: We are factory. Our factory is located in Wuxi, Jiangsu,about two hours drive from shanghai port.

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