Super-ferritic stainless steel Grade SUS436L 439M
Technical advantages:
TISCO is well experienced at researching, developing and producing super ferritic stainless steel, and form the key process technology on super ferritic stainless steel which own the intellectual property.
Advantages on equipment: After continuously revamping and upgrade, TISCO is well equipped with specialized and the most advanced production line of super ferritic stainless steel in the world.
Producing advantage: Equipped with large-scale, advanced and high efficient equipments, we can produce a series of super ferritic stainless steel product is in different grades and specifications, and meet the requirements of market.
Quality of products: The process which use hot metal as main part of materials to produce super ferritic stainless steel can reduce the unnecessary elements to lowest level. Using VOD decarburization and denitrifying process can get the lower content of carbon and nitrogen.
Application of Super Ferritic Stainless Steel Industry
The industry of automobile exhausting system: We have established long term cooperation with end users and service centers which work at automobile exhausting tubes and pressed parts.
Research and Development
TISCO technology center ranks 2nd among enterprise-based 729 technology centers accredited by the state in 2011.
Conventional Products
|
Steel grade |
Grade |
Specifications Thickness |
Width mm |
|
Standard |
Application |
|
400 series |
SUS436L TTS441 TTS429 439M |
2B/2D Surface: 0.3-3.0mm BA surface: 0.2-1.5mm |
2B/2D Surface: 1000-1280 1000-2000 BA surface: 1000-1500 |
6-15MT |
Q/T 128-2011 ASTM/ASME JISG4305 EN10088 BSEN10028-7 |
Apply to exhaust pipe |
|
SUS444 TTS445J1 TTS445J2 |
JISG4305 GB/T 3280 Q/T 067-2012 |
Apply to make water tank, solar water heater |
||||
|
439 TTS439 |
ASTM/ASME Q/T 012-2011 |
Apply to elevator, kitchen appliance |
||||
|
TTS443 TTS443M YH21CT |
Q/T 055-2008 Q/T 012-2009 |
Elevator decoration |
Chemical Composition
|
Grade |
Mass Percentage (%) MAX |
||||||||
|
C |
Si |
Mn |
P |
S |
Cr |
N |
Mo |
Others |
|
|
436 |
0.025 |
1.00 |
1.00 |
0.040 |
0.030 |
16.0-19.0 |
0.025 |
0.75-1.50 |
Nb+Ti:8(C+N)-0.80 |
|
441 |
0.025 |
1.00 |
1.00 |
0.040 |
0.015 |
17.5-18.5 |
0.030 |
- |
Nb:3C+0.3-1.00 Ti:0.10-0.60 |
|
429 |
0.020 |
1.00 |
1.00 |
0.040 |
0.030 |
14.0-16.0 |
0.020 |
- |
Nb:3C+0.3-1.00 |
|
444 |
0.025 |
1.00 |
1.00 |
0.040 |
0.030 |
17.0-20.0 |
0.035 |
1.75-2.50 |
Nb+Ti:0.2+4(C+N)-0.80 |
|
443 |
0.025 |
1.00 |
1.00 |
0.035 |
0.015 |
19.5-22.0 |
0.025 |
- |
Nb+Ti:0.2+4(C+N)-0.75 |
|
439 |
0.030 |
1.00 |
1.00 |
0.040 |
0.015 |
17.5-18.5 |
0.030 |
- |
Nb+Ti:4C-0.75 |
|
TTS445J1 |
0.025 |
1.00 |
1.00 |
0.040 |
0.030 |
21.0-24.0 |
0.020 |
0.60-1.50 |
Nb+Ti:10(C+N)-0.75 |
|
TTS445J2 |
0.025 |
1.00 |
1.00 |
0.040 |
0.030 |
21.0-24.0 |
0.025 |
1.50-2.50 |
Nb+Ti:0.2+4(C+N)-0.75 |
Physical properties
|
Grade |
Density (g/cm3) |
Elastic modulus GPa |
Linear expansion coefficient 10-6/K20-100C |
Themnal conductivity W/m K 100C |
J/Kg k Specific heat 20C |
Resistance rate (UM cm) |
Magnetism |
|
436 |
7.73 |
200 |
10.4 |
23.6 |
433 |
48 |
Qualified |
|
441 |
7.75 |
210 |
10.4 |
24.7 |
460 |
60 |
Qualified |
|
429 |
7.70 |
225 |
10.9 |
26.8 |
460 |
67 |
Qualified |
|
444 |
7.75 |
206 |
10.1 |
21.1 |
460 |
62 |
Qualified |
|
439 |
7.70 |
200 |
10.4 |
23.1 |
460 |
60 |
Qualified |
|
443 |
7.73 |
204 |
10.5 |
22.5 |
444 |
62 |
Qualified |
|
TTS445J1 |
7.75 |
200 |
10 |
22.5 |
460 |
62 |
Qualified |
|
TTS445J2 |
7.72 |
200 |
10.1 |
22.5 |
460 |
62 |
Qualified |
Mechanical Properties
Mechanical properties at ambient temperature
|
Grade |
Yield strength RP0.2(MPa) |
Tensile strength Rm(MPa) |
Elongation A(%) |
Hardness HRS |
Hardness HV |
Bending test |
|
436 |
≥250 |
≥430 |
≥18 |
≤96 |
≤230 |
Qualified |
|
441 |
≥245 |
≥410 |
≥20 |
≤96 |
≤230 |
Qualified |
|
429 |
≥205 |
≥450 |
≥22 |
≤88 |
≤200 |
Qualified |
|
444 |
≥245 |
≥450 |
≥20 |
≤96 |
≤230 |
Qualified |
|
439 |
≥205 |
≥415 |
≥22 |
≤88 |
≤183 |
Qualified |
|
443 |
≥250 |
≥450 |
≥25 |
≤96 |
≤230 |
Qualified |
|
TTS445J1 |
≥245 |
≥410 |
≥28 |
≤96 |
≤230 |
Qualified |
|
TTS445J2 |
≥245 |
≥410 |
≥20 |
≤96 |
≤230 |
Qualified |
Welding Properties and Notice:
l Low carbon and Nitrigon, Titanium and Niobium added, high corrosion-resisted performance on welding parts.
l Difficult for Fusion wedding and etter for filler wire welding.
l Low thermal expansion coefficient-high heat conduction and small deformation after welding comparing with 304.
l Try to avoid heat imputing, otherwise result in bigger crystalline grain and influent the toughness of the plate.
l Gas protection: Argon protection is needed to avoid surface oxidization and nitrizing.
l To Avoid the contanmination of grease, otherwise carburization will occur.
l Better to use 309L or higher grade welding rod.
Research and Development Target
400 series will be our research and developing target in future. Supper ferritic stainless steel will be hightlight, and as the substitute of 304 for our aim on the direction of economic research and developing. Realize 439 and 443 product seriation, enlarge the application of decorationg industry such ad the decoration of outside roof and curtain wall. Develop the high-chromium ferritic stainless steel such as 445, 446M and so on to improve the application of 400 series.
Package and Loading:
Service Promise
l To provide consumers with the personalized designs on composition, propertiesproperty, packing, coil weight and quality certificate.
l Technical support to customers in material selection fabrication.
l Accurate and prompt delivery
l Response to customer’s claim within 24 hours.
Contact Us
Alicia (Ms.) / Sales Manager
Tel: +86-769-85325956
Fax: +86-769-82380569
Mob:+86-159-99718496
Email:[email protected]
Skype:Alicia-steel
QQ:309801984