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Home » Stainless Steel » Product introduction
430 Stainless Steel
- Numbers: 2011030706
- Model: 430
- Producers: China
- Update time: 2011.03.07
- Browse:
Product Description:
SX 430 Technical Data
Summary
SX 430 Technical Data
Summary
SX430 is a low-carbon plain chromium ferritic Stainless steel. The steel has good corrosion resistance in mildly corrosive environments and good resistance to oxidation at elevated temperatures. In the annealed condition the steel is ductile, does not harden excessively during cold work and can be formed using a large variety of roll forming or mild stretch-bending operations, as well as the more common drawing and bending processes. The steel has limited weldability and should not be used in the as welded condition for dynamic or impact loaded structures. Being a ferritic material, 430 is liable to brittle fracture at sub-zero temperatures, and cannot be used in cryogenic applications. As the steel does not contain nickel or molybdenum, it is cheaper than any of the 300 series steels.
Typical Applications
430 is a simple corrosion and heat-resisting grade and finds application in areas where mildly corrosive conditions occur or where scaling resistance at moderate temperatures is required. Typical applications include: Automotive trim, architectural applications such as industrial roofing and wall cladding, kitchen utensils, sinks, washing machine parts and industrial pipe and tube. Materials handling equipment in the mining and sugar industry. Heat resisting applications up to 759oC.
Chemical Composition
| Analysis % | oC | Mn | P | S | Si | Cr |
| ASTM A 240 | 0.12 max | 1.0 max | 0.045 max | 0.03 max | 1.0 max | 16.0-18.0 |
| Typical | 0.05 | 0.7 | 0.021 | 0.024 | 0.6 | 17 |
Typical properties in the annealed condition
The properties quoted in this publication are typical of mill Product and unless indicated should not be regarded as guaranteed minimum values for design purposes. For these purposes refer to the relevant specification.
1. Mechanical properties at room temperature
| Typical | Minimum | |
| Tensile Strength, MPa | 530 | 450 |
| Proof Strength, 0.2 % , MPa | 360 | 205 |
| Elongation (Percent in Lo=5.65 So) MPa | 25 | 22 |
| Hardness | 160 | - |
2. Properties at elevated temperatures
Short time elevated temperature tensile strength
| Temperature, oC | 300 | 400 | 550 | 650 | 750 |
| Strength, MPa | 450 | 430 | 220 | 120 | 50 |
Creep data
Stress for a creep rate of 1% in 10 000 h
| Temperature, oC | 550 | 600 | 650 | 700 | 750 |
| Stress, MPa | 50 | 30 | 15 | 5 | 3 |
Recommended maximum service temperature
(Oxidising Conditions)
Continuous Service 750 oC
Intermittent Service 850 oC
Note: Service in the temperature range 425 -525 oC for over 100 hours will cause the steel to be brittle on cooling to room temperature.
3. Corrosion resistance
3.1 Aqueous
| Temperature oC | 20 | 80 |
| Concentration, % mass | 1 5 10 20 80 100 | 1 5 10 20 80 100 |
| Sulphuric Acid | 2 2 2 2 2 1 | 2 2 2 2 2 2 |
| Nitric Acid | 0 0 0 0 1 2 | 0 0 0 1 1 2 |
| Phosphoric Acid | 0 0 2 2 1 0 | 0 0 2 2 1 1 |
| Acetic Acid | 0 0 1 1 1 0 | 0 2 2 2 2 0 |
Key: 0 = resistant - corrosion rate less than 100 m/year
1 = partly resistant - corrosion rate less than 1000 m/year
2 = non resistant - corrosion rate more than 1000 m/year
3.2 Atmospheric
The performance of 430 compared with other metals in various environments is shown in the following table. The corrosion rate is based on a 10 year exposure.
| Environment | Corrosion Rate (um/year) | ||
| SX 430 | Aluminium-3S | Mild Steel | |
| Rural | 0.0025 | 0.028 | 4.3 |
| Marine | 0.0381 | 0.424 | 25.7 |
| Marine-Industrial | 0.0406 | 0.546 | 37.1 |
Welding
430 has adequate weldability for many applications. However it is prone to embrittlement in the weld/haz. The fatigue properties of 430 in the welded condition are poor and it is not recommended for applications where applied tensile or impact loading will be experienced.
Thermal Processing
1. Annealing
Annealed 430 is in the softest and most ductile condition, and may be used for cold-working operations. The annealing temperature range is 760oC followed by cooling in air.
2. Stress relieving
Stress relief after welding is not usually required, although 200-300oC is the recommended stress relieving temperature range.
3. Hot working
Initial forging and pressing temperature range: 1100 - 1150oC
Finishing temperature: below 750oC
Avoid extended holding times above 1000oC as excessive grain growth takes place, which severally reduces ductility
Note: Soaking times to ensure uniformity of temperature are longer for Stainless steels than for carbon steels. Use up to 1/2 times the time employed for the same thickness of mild steel.
Cold Working
430 can readily be fabricated by cold working. Typical operations include bending, forming, deep drawing and upsetting.
Special Steel classification：
Stainless steel，Hi-Steel HSLA-80，Steel mould,Heat resistant steel,Tool steel,Ball bearing steel,Spring steel,Alloy steel,Construction steel，Die steel，Mould steel.
Product description：
Step Shaft 430 Tube 430 Pie-shaped 430 Ring 430 Module 430 Large valves of the main 430 Other Profiled forgings 430
Products Introduction :
Specialized and high quality steel.
We have the advantages of equipment, technologies and price.
Specifications:
Round bar ：
Diameter : 1mm-2000mm
Square bar:
Size： 50mm * 50mm-600mm *600mm
Plate steel/flat bar:
Size：Thickness:0.1mm-800mm Width:10mm to 1500mm
Tube/pipe:
Size：OD:6-219mm WT：1-35 mm.
Cold-rolled sheet:Thickness:2-5mm Width:1000mm Length:2000mm
Hot-rolled sheet:Thickness:6-80mm Width:210-610mm
Length: We can supply any length based on the customer's requirement.
Forging/hot rolling/ extrusion of steel.
Forging: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes
Finished goods condition: hot forging/hot rolling + annealing/normalizing + tempering/quenching + tempering/any conditions based on the customer's requirement
Surface conditions: scaled (hot working finish)/ground/rough machining/fine machining/based on the customer's requirement
Furnaces for metallurgical processing: electrode arc + LF/VD/VOD/ESR/Vacuum consumable electrode.
Ultrasonic inspection: 100% ultrasonic inspection for any inperfections or based on the customer's requirement
Excellent service for all kinds of industries,with advantages of technologies, equipment and price.
We serve you with our honesty, integrity, and professionality.
