443 Stainless Steel is one of new Ferritic stainless steel with
excellent rust resistance, good formability by reducing C, while
increasing Cr and adding Ti contents so that it can be approximate
property to 304 grade stainless, furthermore, instead of 304 in
many fields due to lower cost advantage.
Peak Metal, always treat quality as company core heart, has good
experiences on supplying 443 stainless steel sheet and coil with
commitments to endusers and distributors abroad for a few years,
guaranteed material quality and delivery period for all our valued
customers.
● Available Specification
| Item | Standard | Finish | Thick.
(mm) | Width (mm), Master Coil Sizes | Remark |
| 1000 | 1219 | 1250 | 1500 | 1800 | 2000 |
443
Stainless
Steel Coil | ASTM JIS GB | No.1 (1D) | 3.0~8.0 | | ※ | ※ | | | | 1.Cut length upto 12 meters |
| 2B, 2D | 0.4~3.0 | ※ | ※ | ※ | | | |
● Features
1. Magnetic, ferritic stainless steel without Ni and Mo, but with
high Cr.
2. High inter-granular corrosion resistance, excellent formability
and weldability.
3. Excellent pitting and crevice corrosion resistance, with good
thermal stability.
● Applications
Elevator, escalator, home electrical appliance, auto components,
water tank, roaster, kitchen equipment etc.
● Chemical Composition
| GRADE | 400 SERIES, MAX, % |
| C | Mn | P | S | Si | Cr | Ni | Mo | N | Others |
| 405 | 0.08 | 1.0 | 0.04 | 0.03 | 1.0 | 11.5-14.5 | 0.6 | - | - | Al 0.10-0.30 |
| 409L | 0.03 | 1.0 | 0.04 | 0.02 | 1.0 | 10.5-11.7 | 0.5 | - | 0.03 | Ti 63(C+N) min,
0.50 max; Cb 0.17 |
| 410 | 0.08-0.15 | 1.0 | 0.04 | 0.03 | 1.0 | 11.5-13.5 | 0.75 | - | - | - |
| 410S | 0.08 | 1.0 | 0.035 | 0.03 | 1.0 | 11.5-13.5 | 0.6 | - | - | - |
| 420J1 | 0.16-0.25 | 1.0 | 0.04 | 0.03 | 1.0 | 12.0-14.0 | - | - | - | - |
| 420J2 | 0.26-0.4 | 1.0 | 0.04 | 0.03 | 1.0 | 12.0-14.0 | - | - | - | - |
| 430 | 0.12 | 1.0 | 0.04 | 0.03 | 1.0 | 16.0-18.0 | 0.75 | - | - | - |
| 434 | 0.12 | 1.0 | 0.04 | 0.03 | 1.0 | 16.0-18.0 | - | 0.75-1.25 | - | - |
| 436L | 0.25 | 1.0 | 0.04 | 0.03 | 1.0 | 16.0-19.0 | - | 0.75-1.25 | - | Cb 53C min,0.80 max |
| 439 | 0.03 | 1.0 | 0.04 | 0.03 | 1.0 | 17.0-19.0 | 0.5 | - | 0.03 | Ti [0.20+4(C+N)]
min, 1.10 max; Al 0.15 |
| 441 | 0.03 | 1.0 | 0.04 | 0.015 | 1.0 | 17.5-18.5 | 0.5 | - | 0.025 | Nb: 3C+0.3~1.0; Ti: 0.1~0.6 |
| 443 | 0.025 | 1.0 | 0.04 | 0.03 | 1.0 | 20.0-23.0 | 0.5 | - | 0.025 | (Ti+Cb)83(C+N) min, 0.80 max. Cu: 0.3-0.8 |
| 444 | 0.025 | 1.0 | 0.04 | 0.03 | 1.0 | 17.5-19.5 | 1 | 1.75-2.5 | | (Ti+Cb)[0.20+4(C+N)]
min,0.80 max; Cu≤0.035 |
| 447 | 0.01 | 0.3 | 0.025 | 0.02 | 0.2 | 28.0-30.0 | 0.15 | 3.5-4.2 | 0.02 | (C+N) 0.025, Cu≤0.15 |
Features of steelstainless steel 443
Excellent corrosion resistance of 443 stainless steel. 443
stainless steel increases the content of chromium to 21%, and its
corrosion resistance is as good as 304 stainless steel. secondly,
titanium is added to play a stabilizing role, and it also retains
good corrosion resistance after welding.
Price advantage and stability of 443 stainless steel. Because there
is no need to add nickel to the chemical forming elements of 443
stainless steel, the price is cheaper than 304 stainless steel. And
because there is no need to add nickel and molybdenum, the rise and
fall of these two metals will not affect 443 stainless steel, and
price fluctuations are rarely affected by exchange rate
fluctuations.
443 stainless steel has the advantage of thermal conductivity. The
thermal conductivity of 443 stainless steel is about 30% higher
than that of 304 stainless steel, because it can save time and
energy in the field of cooking equipment manufacturing, and because
of its good magnetic conductivity, it can show the advantages of
materials in induction cookers. The application effect of the
material is better.
Surface processing - 8K mirror, HL hairline, color coating
Bending+Welding - OEM customized products as drawing
Application of 443 Corrosion Resistant Stainless Steel Sheet
443 Stainless Steel Corrosion Resistance
443 stainless steel has excellent resistance to atmospheric
corrosion and is resistant to most organic and inorganic acids. Its
high copper content improves the resistance of the alloy to reduce
acid and oxidizing chloride environments. The alloy also exhibits
good resistance to general and localized corrosion in chloride-rich
environments.
443 Stainless Steel Heat Treatment
443 stainless steel is not heat-treatable, but cold working can
improve its mechanical properties. The hardening of the alloy can
be achieved by hard-working, and it can be annealed at temperatures
ranging from 816-900°C.
443 Stainless Steel Machining
443 stainless steel has poor machinability compared to other
stainless steel. The alloy has a high work hardening rate, making
it challenging to machine. However, using sharp and rigid tools,
slow speed, and sufficient lubrication can improve its
machinability.
443 Stainless Steel Welding
443 stainless steel can be welded using most conventional fusion
welding methods. However, it is prone to cracking and distortion
during welding, and careful control of the welding process is
vital. Preheating is recommended before welding to minimize the
risk of cracking, and the interpass temperature should be kept low.
Conclusion:
In conclusion, 443 stainless steel is a cost-effective alternative
to austenitic stainless steel. Its low carbon content, high copper
content, and molybdenum give the alloy excellent resistance to
chloride environments. Its good mechanical properties, corrosion
resistance, and weldability make it an ideal material for various
applications, including automotive exhaust systems, heat
exchangers, and chemical tanks. Since the alloy has poor
machinability, it is crucial to use sharp and rigid tools, slow
speed, and sufficient lubrication when machining. If you are
looking for a durable material that can withstand corrosive
environments and high mechanical loads, 443 stainless steel is the
way to go.
