430 stainless steel bar density and hardness
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430 Stainless Steel Bar: Density and Hardness Explained
430 stainless steel bar is a widely used ferritic stainless steel product known for its good corrosion resistance, formability, and attractive appearance-especially in applications where high strength or extreme corrosion resistance is not critical. If you're sourcing or engineering with 430 stainless steel round bar, understanding its density and hardness is essential for accurate material selection and design.
In this article, we'll cover the mechanical properties of 430 stainless steel bar, focusing on its density, hardness (HRB), and how they compare to other stainless steel grades.
What Is the Density of 430 Stainless Steel Bar?
Density: 7.70 g/cm³ (or 7700 kg/m³)
This relatively moderate density makes 430 stainless steel bar lighter than austenitic grades such as 304 and 316 (which have densities around 8.0 g/cm³), and ideal for applications requiring weight optimization without compromising rigidity.
Why Density Matters:
Critical for weight calculations in structural applications
Important for cost estimation (since stainless is often sold by weight)
Affects transportation and installation planning
Hardness of 430 Stainless Steel Bar
Typical Hardness (Rockwell B scale): HRB 85–90
In Brinell Hardness (HBW): Approx. 170–180 HB
Compared to austenitic stainless steels (like 304), 430 stainless steel bar is generally harder in its annealed state. However, it is also less ductile and more prone to brittle behavior during forming or welding.
Related Mechanical Properties:
| Property | Value (Typical) |
|---|---|
| Hardness | HRB 85–90 |
| Tensile Strength | 450–500 MPa |
| Yield Strength | ~275 MPa |
| Elongation (50mm) | ~22% |
| Modulus of Elasticity | ~200 GPa |
Ferritic Structure: What It Means for Hardness
As a ferritic stainless steel, 430 does not contain nickel. This gives it:
Magnetic properties (unlike 304 or 316)
Higher hardness in annealed state
Better resistance to stress corrosion cracking compared to austenitic grades
Applications of 430 Stainless Steel Bar
Kitchen equipment (oven doors, handles, trims)
Decorative architectural elements
Indoor fasteners and supports
Automotive trim
Hardware parts where moderate hardness and dimensional stability are valued
430 Stainless Steel Bar vs 304: Hardness and Density Comparison
| Property | 430 Bar | 304 Bar |
|---|---|---|
| Density | 7.70 g/cm³ | 8.00 g/cm³ |
| Hardness (HRB) | 85–90 | 70–80 |
| Tensile Strength | ~450 MPa | ~505 MPa |
| Ductility | Lower | Higher |
| Magnetic | ✅ Yes | ❌ No (annealed) |
Available Forms of 430 Stainless Steel Bar
We supply 430 stainless steel bars in various shapes and finishes:
Round bar (hot rolled or cold drawn)
Hex bar
Flat bar
Custom cut lengths and polished finishes available
If you're looking for 430 stainless steel bar with certified hardness and density specifications, we can help. We provide:
Mill test certificates (MTC)
Custom machining services
Fast global shipping
👉 Contact our technical team today to select the right bar size, finish, and mechanical properties for your project.
