S32760high resistance Duplex Stainless Steel Pipe
1.Product Description
1) Product feature:
Duplex Stainless Steel (referred to as DSS) refers to ferrite and austenite each accounting for about 50%, generally the content of the less phase also needs to be at least 30% stainless steel. In the case of low C content, Cr content is 18% ~ 28%, Ni content is 3% ~ 10%. Some steels also contain alloying elements such as Mo, Cu, Nb, Ti, and N.
This type of steel has the characteristics of austenitic and ferritic stainless steel. Compared with ferrite, it has higher plasticity and toughness, no room temperature brittleness, and has significantly improved intergranular corrosion resistance and welding performance, while maintaining iron. The 475 ° C brittleness and high thermal conductivity of plain stainless steel are characterized by superplasticity. Compared with austenitic stainless steel, the strength is high and the resistance to intergranular corrosion and chloride stress corrosion is significantly improved. Duplex stainless steel has excellent pitting corrosion resistance and is also a nickel-saving stainless steel.
| 1. Product: |
SAF2205(S31803) Duplex Stainless Steel Pipe |
| 2. Diameter: |
From Ø1/4'' to Ø16'' ( Diameter: 6mm~400mm ) |
| 3. Length: |
1~ 8meters |
| 4. Steel type: |
254SMO |
| 5. Standard: |
ASTM 276, ASTM A564, ASTM A582, ASTM A484 |
| 6. Surface: |
Bright, peeled, CNC machined, polished, or black etc, will be as per customers' request |
| 7. Diameter tolerance: |
H9, H11, H13, K9, K11, K13 etc…as per clients' request etc |
| 8. Length tolerance: |
0/+50mm |
| 9. Finishing: |
Solution treated |
| 12. Application: |
Shipbuilding industry, marine shaft, propeller shaft, transmission shaft |
| bolt & nuts, machine-made industry, food industry, paper mill equipment. |
| 13. Delivery time |
Generally within 25 days, as per the q'ty. |
| 14. Certificate: |
ISO, BV, TUV, SGS, mill test certificate |
| 15. Package: |
Good quality & fumigated wooden box, can better protect the bars. ( See pictures below ) |
| 16. Experience:: |
We have much experience in producing the stainless steel round bar, enjoy good reputations. |
2)Grade:
304LN,316,316Lmod,317LMN,347,S31050,1.4301,1.4311,1.4436,N08904,S31254,N08926,S34565,S32654,304,304L ,S32010,1.4162,1.4529,1.4539,1.4547,1.4565,1.4652,254SMO,,904L,316Lmod,725LN,253MA and so on.
| Chemical composition |
|
|
|
|
|
|
|
| Grade |
C |
Si |
Mn |
P |
S |
Ni |
Cr |
| AISI 201 |
<=0.15 |
<=1.00 |
5.5-7.5 |
<=0.060 |
<=0.03 |
<=3.50-5.50 |
<=16.00-18.00 |
| AISI 202 |
<=0.15 |
<=1.00 |
7.5-10.0 |
<=0.060 |
<=0.03 |
<=4.0-6.0 |
<=17.00-19.00 |
| AISI 304 |
<=0.07 |
<=1.00 |
<=2.00 |
<=0.045 |
<=0.03 |
<=8.00-10.5 |
<=18.00-20.00 |
| AISI 316L |
<=0.03 |
<=1.00 |
<=2.00 |
<=0.045 |
<=0.03 |
<=12.00-15.00 |
<=16.00-18.00 |
| AISI 309S |
<=0.08 |
<=1.00 |
<=2.0 |
<=0.045 |
<=0.03 |
<=12.00-15.00 |
<=22.00-24.00 |
| AISI 310S |
<=0.08 |
<=1.00 |
<=2.00 |
<=0.045 |
<=0.03 |
<=19.00-22.00 |
<=24.00-26.00 |
| AISI 321 |
<=0.08 |
<=1.00 |
<=2.00 |
<=0.045 |
<=0.03 |
<=9.00-13.00 |
<=17.00-19.00 |
| AISI 409L |
<=0.08 |
<=1.00 |
<=1.00 |
<=0.045 |
<=0.03 |
<=0.50 |
<=10.50-17.50 |
| AISI 430 |
<=0.12 |
<=0.75 |
<=1.00 |
<=0.040 |
<=0.03 |
<=0.60 |
<=16.00-18.00 |
| AISI 436L |
<=0.025 |
|
|
|
|
|
<=16.00-19.00 |
| AISI 439 |
<=0.03 |
<=1.00 |
<=1.00 |
<=0.040 |
<=0.03 |
<=0.50 |
<=17.00-19.00 |
| AISI 441 |
<=0.015 |
<=1.00 |
<=1.00 |
<=0.040 |
<=0.03 |
<=0.30 |
<=17.50-19.00 |
| AISI 444 |
<=0.025 |
<=1.00 |
<=1.00 |
<=0.040 |
<=0.03 |
<=1.00 |
<=17.50-19.50 |
Mechanical property:
| |
YIELD STRENGTH |
TENSILE STRENGTH |
EXTENSION |
HARDNESS |
|
|
| |
N/mm2 |
N/mm2 |
% |
HRB |
HV |
HB |
| AISI 201 |
>=270 |
>=520 |
>=40 |
<=100 |
<=253 |
<=241 |
| AISI 202 |
>=245 |
>=590 |
>=40 |
<=95 |
<=218 |
<=207 |
| AISI 304 |
>=205 |
>=520 |
>=40 |
<=90 |
<=200 |
<=187 |
| AISI 316L |
>=175 |
>=480 |
>=40 |
<=90 |
<=200 |
<=187 |
| AISI 309S |
>=205 |
>=520 |
>=40 |
<=90 |
<=200 |
<=187 |
| AISI 310S |
>= 205 |
>=520 |
>=40 |
<=90 |
<=200 |
<=187 |
| AISI 321 |
>=205 |
>=520 |
>=40 |
<=90 |
<=200 |
<=187 |
| AISI 409L |
>=175 |
>=360 |
>=25 |
<=80 |
<=175 |
<=162 |
| AISI 430 |
>=205 |
>=450 |
>=22 |
<=88 |
<=200 |
<=183 |
| AISI 439 |
>=245 |
>=410 |
>=20 |
<=96 |
<=230 |
<=217 |
| AISI 441 |
>=302 |
>=495 |
>=35 |
<=96 |
<=170 |
<=217 |
| AISI 444 |
>=245 |
>=410 |
>=20 |
<=96 |
<=230 |
<=217 |
3)Packaging & Shipping
| PackagingDetails: |
Products are well packed and clear labeled according to the regulations and customer's requests. |
| Delivery Detail: |
7-15days after receiving deposit |
4)The welding characteristics of duplex stainless steel are as follows:
After normal solution treatment (heating and water cooling at 1020 ºC ~ 1100 ºC), the duplex stainless steel contains about 50% ~ 60% austenite and 50% ~ 40% ferrite structure. With the increase of heating temperature, the change of the two phases is not obvious.
Duplex stainless steel has good low-temperature impact toughness. For example, the transverse absorption of a 20 mm thick plate can reach more than 100J at -80 ºC. In most media, its uniform corrosion resistance and pitting corrosion resistance are good, but it should be noted that when this type of steel is heat treated below 950 ° C, its stress corrosion resistance will be significantly deteriorated due to the precipitation of σ phase. Since the ratio of Cr equivalent to Ni equivalent of the steel is appropriate, a large amount of primary austenite structure remains after heating at high temperature, and secondary austenite can be generated during the cooling process, resulting in the total amount of austenite phase in the steel Not less than 30% ~ 40%, so that the steel has good resistance to intergranular corrosion.
In addition, as mentioned earlier, the tendency to crack when welding this steel is very low, and preheating and post-weld heat treatment are not necessary. Due to the high N content in the base metal, the single-phase ferrite area will not be formed in the welding near-seam area, and the austenite content is generally not less than 30%. Applicable welding methods include tungsten electrode argon arc welding and electrode arc welding. Generally, in order to prevent coarsening of the grains near the seam area, low linear energy welding should be used when welding.
Our Services
1.Our Service For You
Pre-sale Service
1. Sample can be offered with sample charge and courier fee by buyer's side.
2. We have full stock,and can deliver within short time.Many styles for your choices.
3. OEM and ODM order are accepted, Any kind of logo printing or design are available.
4. Good Quality + Factory Price + Quick Response + Reliable Service, is what we are trying best to offer you
5. All of our products are produce by our professional workman and we have our high-work-effect foreign trade team, you can totally believe our service.
6. We have 8 year experience of design, manufacture and sell lingerie, we cherish every order from our honor.
After you choose
1. We will count cheapest shipping cost and make invoice to you at once.
2. Check quality again, then send out to you at 1-2 working day after your payment,
3. Email you the tracking no, and help to chase the parcels until it arrive you.
After-sale choose
1. We are very glad that customer give us some suggestion for price and products.
2. If any question,please contact with us freely by E-mail or Telephone.
FAQ
1. If we travel to China to checking your facility, are you welcome?
Of course, why not?
we will provide the whole accompany from you landing in China.
Only Give us a call before your arrive.
We will pick up you from the airport, living in our company's hotel, and driving by car take you visiting our company.
Warm Welcome!
2. How many sales person in your team?
present 8 sales, but more hands help in work, total team is 20+ workers.
So do not worry, not the one person company.
3. How Many Years of your company working in this industry?
We are 20+ years, from last century.
Expanding the market, and cultivate our techniques, two ways all in work together.
4. Could you show me some photos of your producing working?
here, following is our working plant, all is same when you come to China to audit.
Contact us
Shanghai Bozhong Metal Group Co., Ltd.
ADD: Floor 5, Building 32, No.288 Xinzhuan Highway, Songjiang District, Shanghai, China
Contact: Alicia Liu
Website: https://shanghaibozhong.en.made-in-china.com
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