Stainless steel alloy 430 (UNS S43000) is a non-hardenable ferritic stainless steel that contains straight chromium, offered as round bar and hex bar at all Titanium Industries locations.
Stainless steel alloy 430 at a glance
Grade 430 is known for its good corrosion resistance and formability, with practical mechanical properties. Because it resists nitric acid, it is used in chemical applications where corrosion resistance matters more than strength.
Typical uses include automotive trim, chimney liners, element supports, fasteners, lashing wire, dishwasher linings, refrigerator cabinet panels and stove trim rings.
Welding needs care: type 430 has higher carbon and no stabilizing elements, so it needs heat treatment after welding to restore corrosion resistance and ductility. For welded ferritic parts, the stabilized grades 439 and 441 are usually the better choice.
The chemical composition, mechanical properties and cross-reference specifications for stainless steel alloy 430 are listed in the tables below. The data is for reference only, not for design.
Stainless steel grade 430 is a non-hardenable steel containing straight chromium that belongs to the ferritic family of steels. Known for its good corrosion resistance and formability, grade 430 also demonstrates practical mechanical properties. Due to its resistance to nitric acid, this metal can be found in certain chemical applications where corrosion resistance is more important than strength.
Type 430 has poor weldability compared to most stainless steels because of higher carbon content and lack of stabilizing elements that requires post weld heat treatment to restore the corrosion resistance and ductility. Grades such as stabilized 439 and 441 are considered superior alternatives for welded ferritic stainless steel applications.
Stainless Steel product forms offered at all Titanium Industries’ locations:
Stainless Steel Alloy 430 Applications:
- Automotive trim
- Chimney Liners
- Element Supports
- Fasteners
- Lashing Wire
- Linings for dish washers
- Refrigerator cabinet panels
- Stove trim rings
DISCLAIMER: Alloy data sheets are for reference only, not for design purposes.
| Chemical Composition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| C 0.12% Max | Mo 1.0% | Si 1.0% | P 0.040% | S 0.030% | |||||
| Cr 16.0 - 18.0% | Ni 0.75% Max | Mo 0.50% | Cu 0.50% | Al 0.050% | |||||
| Sn 0.05% | |||||||||
| PHYSICAL PROPERTIES | ||||||
|---|---|---|---|---|---|---|
| Density (lb/ft3) | Electrical conductivity (% IACS) | Thermal conductivity (BTU/h-ft-°F) | Specific heat capacity (BTU/lb-°F) | Thermal expansion (µm/m-K) | ||
| .28 | - | 13.8 | 0.11 | 10.4 | ||
| Mechanical Properties | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Property | Minimum | Maximum | |||||||
| Yield Strength Range (Rp0.2 Offset) (ksi) | - | 30 | |||||||
| Tensile Strength Range (Rm) (ksi) | - | 65 | |||||||
| Elongation (AL=5 x Ø) | 22.0% | - | |||||||
| Hardness, max (Rb) | - | 89 | |||||||
| Modulus of Elasticity (psi): 29.0 x 10^6 | |||||||||
| Machineability General Index: - | |||||||||
Stainless steel alloy 430: questions and answers
What is stainless steel alloy 430?
What is stainless steel alloy 430?
A ferritic, non-hardenable stainless steel with straight chromium (UNS S43000), valued for corrosion resistance and formability.
Can stainless steel alloy 430 be welded?
Can stainless steel alloy 430 be welded?
Yes, but it needs heat treatment after welding to restore corrosion resistance and ductility. Stabilized grades 439 and 441 are better suited to welded ferritic parts.
Which product forms of alloy 430 does Titanium Industries supply?
Which product forms of alloy 430 does Titanium Industries supply?
Stainless steel round bar and hex bar, offered at all Titanium Industries locations.