430 Stainless Steel is a non-hardenable ferritic stainless steel. It has good formability and weldability. It has good corrosion resistance in a wide range of atmospheres, including fresh water, organics, and mild acids.
430 stainless steel is also called 1.4016 steel in Europe. The low carbon content and high chromium content of the alloy give it excellent corrosion resistance, as well as good formability and weldability.
1.4016 or 430 stainless steel is magnetic and non-hardenable using a heat treatment process.
430 Stainless Steel Material Specifications
430 Stainless steel UNS Number is UNS S43000. 430 steel is also called 1.4016 stainless steel. The steel is available in sheet, plate, round bar, flat bar, tubular form, and sheet coil.
The most important material specifications for 430 Stainless steel and equivalents material grades are:
- ASTM A 182: Grade F430 (Forged Flange, fittings, and values)
- ASTM A 240: Grade 430 (Sheets, Plates, and strips)
- ASTM A268: Grade TP 430 (Seamless or welded Tubes)
- ASTM A 276: Grade 430 (Bars and shapes)
- EN 10088-2: Grade 1.4016
- AMS 5503
- SAE 430
- BS 430S15
- DIN X8Cr17
430 Stainless steel (1.4016) Chemical Compositions
430 (1.4016) Stainless steel main chemical compositions are Carbon (0.12% maximum), Chromium (16-18%), Manganese & Silicon (1.0% maximum). Detailed chemical compositons of SS430 are given in the below table. (Reference ASTM A240).
| Element | Weight % |
|---|---|
| Carbon | 0.12 max. |
| Manganese | 1.0 max. |
| Silicon | 1.0 max. |
| Chromium | 16.0- 18.0 max. |
| Nickel | 0.75 max. |
| Phosphorus | 0.040 max. |
| Sulfur | 0.030 max. |
430 Stainless steel (1.4016) Mechanical Properties
430 stainless steel is a ferritic, high-alloyed stainless steel with high chromium and nickel content. It has good formability, ductility and weldability.
| Property | Valve |
|---|---|
| Tensile Strength, Ksi (MPa) | 65 (450) |
| Yield Strength, Ksi (MPa) | 30 (205) |
| Elongation % | 22 minimum |
| Hardness Brinell (HRBW) | 183 (89) |
Its mechanical properties are similar to those of 304 stainless steel, but it has lower ductility and strength. This grade of stainless steel is magnetic and cannot be heat treated.
430 Stainless steel (1.4016) Physical Properties
Important 430 stainless steel physical properties are listed below:
| Property | Valve |
|---|---|
| Density (g/cm³) | 7.75 |
| Elastic Modulus (GPa) | 200) |
430 stainless steel vs 302
In terms of composition, 430 stainless steel is made up of 17-19% chromium and a maximum of 0.12% carbon. 302 stainless steel consists of 17-19% chromium and 8-10% nickel.
| Element | 430: Weight % | 302: Weight % |
|---|---|---|
| Carbon | 0.12 max. | 0.15 max. |
| Manganese | 1.0 max. | 2.0 max. |
| Phosphorus |
0.040 max. | 0.045 max. |
| Sulfur | 0.030 max. | 0.030 max. |
| Silicon | 1.0 max. | 0.75 max. |
| Chromium | 16.0- 18.0 max. | 17.0- 19.0 max. |
| Nickel | 0.75 max. |
8.0- 10.0 max. |
| Molybdenum | – | – |
| Nitrogen | – | 0.10 max. |
| Copper | – | – |
| Other elements | – | – |
430 stainless steel is less expensive than 302 stainless steel, but it doesn’t have the same corrosion resistance properties. It can be used in applications where corrosion is not a concern, but it is not as resistant to high temperatures as 302 stainless steel.
302 stainless steel is more resistant to corrosion than 430 stainless steel, making it a better choice for applications where the material will be exposed to salt water or chemicals.
430 being ferritic stainless is magnetic while 302 stainless steels is non-magnetic. They can be easily welded, but they have different mechanical properties. 430 stainless steel is less strong than 302 stainless steel and will not hold up as well under high loads.
| Property | 430 | 302 |
|---|---|---|
| Yield Strength, Ksi (MPa) |
65 (450) | 75 (515) |
| Tensile Strength, Ksi (MPa) |
30 (205) | 30 (205) |
| Elongation % |
22 minimum | 40 minimum |
| Hardness Brinell (HRBW) | 183 (89) | 201 (92) |
302 stainless steel is an austenitic chromium-nickel alloy with excellent corrosion resistance and high temperature strength. It is widely used in the food and beverage industry, as well as in medical and chemical applications.
430 stainless steel vs 304
There are key differences between the two. For one, 430 is a ferritic stainless steel (magnetic) while 304 is an austenitic stainless steel (non-magnetic).
430 also has a lower chromium content than 304 which makes it more susceptible to corrosion. 304 has high toughness and ductility due to added nickel while there is no nickel in 430 material.
| Element | 430: Weight % | 304: Weight % |
|---|---|---|
| Carbon | 0.12 max. | 0.07max. |
| Manganese | 1.0 max. | 2.0 max. |
| Phosphorus |
0.040 max. | 0.045 max. |
| Sulfur | 0.030 max. | 0.030 max. |
| Silicon | 1.0 max. | 0.75 max. |
| Chromium | 16.0- 18.0 max. | 17.5- 19.5 max. |
| Nickel | 0.75 max. |
8.0- 10.5 max. |
| Molybdenum | – | – |
| Nitrogen | – | 0.10 max. |
| Copper | – | – |
| Other elements | – | – |
304 has high tensile strength, %elongation, toughness and hardness compared to 430 grade steel. Although, both have same yield strength.
| Property | 430 | 304 |
|---|---|---|
| Yield Strength, Ksi (MPa) |
65 (450) | 75 (515) |
| Tensile Strength, Ksi (MPa) |
30 (205) | 30 (205) |
| Elongation % |
22 minimum | 40 minimum |
| Hardness Brinell (HRBW) | 183 (89) | 201 (92) |
430 stainless steel vs 316
430 stainless steel is a ferritic stainless steel with good corrosion resistance in mildly corrosive environments. It has higher thermal conductivity than austenitic steels and is used in applications where heat resistance is a key requirement. 430 stainless steel is commonly used in the food industry for appliances, cookware, and flatware.
316 stainless steel contains 2-3% molybdenum, making it more corrosion resistant than other types of stainless steel. It’s often used in food processing and marine applications because it can withstand salt water and other harsh environments.
| Element | 430: Weight % | 316: Weight % |
|---|---|---|
| Carbon | 0.12 max. | 0.08 max. |
| Manganese | 1.0 max. | 2.0 max. |
| Phosphorus |
0.040 max. | 0.045 max. |
| Sulfur | 0.030 max. | 0.030 max. |
| Silicon | 1.0 max. | 0.75 max. |
| Chromium | 16.0- 18.0 max. | 16- 18 max. |
| Nickel | 0.75 max. |
10.0- 14.0 max. |
| Molybdenum | – | 2.0- 3.0 |
| Nitrogen | – | 0.10 max. |
| Copper | – | – |
| Other elements | – | – |
316 stainless steel is an austenitic chromium-nickel stainless steel with excellent corrosion resistance. It has higher strength and toughness at elevated temperatures than 304 stainless steel. 316 stainless steel is often used in marine applications for its superior corrosion resistance in salt water environments.
| Property | 430 | 316 |
|---|---|---|
| Yield Strength, Ksi (MPa) |
65 (450) | 75 (515) |
| Tensile Strength, Ksi (MPa) |
30 (205) | 30 (205) |
| Elongation % |
22 minimum | 40 minimum |
| Hardness Brinell (HRBW) | 183 (89) | 217 (95) |
430 stainless steel vs 201
430 stainless steel is the most widely used ferritic stainless steel. It has good corrosion resistance in a wide variety of environments as well as high temperature and mechanical strength. However, it is not as resistant to icorrosion as 201 stainless steel.
| Element | 430: Weight % | 201: Weight % |
|---|---|---|
| Carbon | 0.12 max. | 0.15 max. |
| Manganese | 1.0 max. | 5.50- 7.50 |
| Phosphorus |
0.040 max. | 0.060 max. |
| Sulfur | 0.030 max. | 0.030 max. |
| Silicon | 1.0 max. | 1.0 max. |
| Chromium | 16.0- 18.0 | 16- 18 |
| Nickel | 0.75 max. |
3.5- 5.5 |
| Molybdenum | – | – |
| Nitrogen | – | 0.25 max. |
| Copper | – | – |
| Other elements | – | – |
201 stainless steel is an austenitic chromium-nickel-manganese stainless steel which was developed to conserve nickel. It is a nonmagnetic stainless steel with a manganese content of 5.5-7.5 % maximum, and a silicon content of 1.0% maximum.
The high maganese content gives excellent galling resistant to 201 stainless steel making it a ideal choice for bolts or nut that need high galling resistant.
As compared to 430 alloys, 201 offers higher yield and tensile strength with less area occupied on the plate under dynamic loading conditions.
201 grade has high hardness and elongation compared to 430 stainless steel.
| Property | 430 | 201 |
|---|---|---|
| Yield Strength, Ksi (MPa) |
65 (450) | 75 (515) |
| Tensile Strength, Ksi (MPa) |
30 (205) | 38 (260) |
| Elongation % |
22 minimum | 40 minimum |
| Hardness Brinell (HRBW) | 183 (89) | 217 (95) |
430 stainless steel vs 403
403 stainless steel is a martensitic stainless steel that offers good mechanical properties and corrosion resistance. This grade of stainless steel is magnetic, and can be heat treated to improve its hardness.
430 stainless steel is a ferritic stainless steel that offers good corrosion resistance and formability. This grade of stainless steel is also magnetic but cannot be heat treated.
| Element | 430: Weight % | 403: Weight % |
|---|---|---|
| Carbon | 0.12 max. | 0.15 max. |
| Manganese | 1.0 max. | 1.0 max. |
| Phosphorus |
0.040 max. | 0.040 max. |
| Sulfur | 0.030 max. | 0.030 max. |
| Silicon | 1.0 max. | 0.50 max. |
| Chromium | 16.0- 18.0 max. | 11.5- 13.5 |
| Nickel | 0.75 max. |
0.60 max. |
| Molybdenum | – | – |
| Nitrogen | – | – |
| Copper | – | – |
| Other elements | – | – |
| Property | 430 | 403 |
|---|---|---|
| Yield Strength, Ksi (MPa) |
65 (450) | 70 (485) |
| Tensile Strength, Ksi (MPa) |
30 (205) | 30 (205) |
| Elongation % |
22 minimum | 25 minimum |
| Hardness Brinell (HRBW) | 183 (89) | 217 (96) |
430 stainless steel is the most widely used of the non-hardenable ferritic stainless steels. It combines good corrosion resistance with heat and oxidation resistance up to 1500°F.
403 stainless steel is a martensitic alloy that contains 0.15% carbon and 11.5-13.5% chromium. This high carbon content gives the alloy increased hardness and strength when compared to other martensitic grades of stainless steel.
430 stainless steel vs 410
430 stainless steel is the most widely used ferritic stainless steel, with typical uses including automotive trim, kitchen utensils, and architectural panels.
410 stainless steel is a martensitic stainless steel that is used in a wide variety of applications where high strength and moderate corrosion resistance are required.
| Element | 430: Weight % | 410: Weight % |
|---|---|---|
| Carbon | 0.12 max. | 0.08- 0.15 |
| Manganese | 1.0 max. | 1.0 max. |
| Phosphorus |
0.040 max. | 0.040 max. |
| Sulfur | 0.030 max. | 0.030 max. |
| Silicon | 1.0 max. | 0.10 max. |
| Chromium | 16.0- 18.0 max. | 11.5- 13.5 |
| Nickel | 0.75 max. |
0.75 max. |
| Molybdenum | – | – |
| Nitrogen | – | – |
| Copper | – | – |
| Other elements | – | – |
| Property | 430 | 410 |
|---|---|---|
| Yield Strength, Ksi (MPa) |
65 (450) | 65 (450) |
| Tensile Strength, Ksi (MPa) |
30 (205) | 30 (205) |
| Elongation % |
22 minimum | 20 minimum |
| Hardness Brinell (HRBW) | 183 (89) | 217 (96) |
Both 430 stainless steel and 410 stainless steel are magnetic, but 430 is less so than 410. 430 has good formability but poor weldability compared to most other steels, while 410 has excellent weldability but poor formability.
430 stainless steel vs 420
The main difference between 430 and 420 stainless steel is that 430 is softer than 420. This makes it easier to work with, but it also makes it more susceptible to damage. 410 is harder and more durable, but it can be more difficult to work with.
| Element | 430: Weight % | 420: Weight % |
|---|---|---|
| Carbon | 0.12 max. | 0.15 minimum |
| Manganese | 1.0 max. | 1.0 max. |
| Phosphorus |
0.040 max. | 0.040 max. |
| Sulfur | 0.030 max. | 0.030 max. |
| Silicon | 1.0 max. | 0.10 max. |
| Chromium | 16.0- 18.0 max. | 12.0- 14.0 |
| Nickel | 0.75 max. |
0.75 max. |
| Molybdenum | – | 0.50 max. |
| Nitrogen | – | – |
| Copper | – | – |
| Other elements | – | – |
Difference between 430 and 420 stainless steel mechanical properties are given in the below table.
| Property | 430 | 420 |
|---|---|---|
| Yield Strength, Ksi (MPa) |
65 (450) | 100 (690) max. |
| Tensile Strength, Ksi (MPa) |
30 (205) | not specified |
| Elongation % |
22 minimum | 15 minimum |
| Hardness Brinell (HRBW) | 183 (89) | 217 (96) |
