Stainless Steel 304 Bars
Stainless Steel 304 Bars are solid long products manufactured from AISI 304 grade austenitic stainless steel, an iron-chromium-nickel alloy containing 18-20% chromium and 8-10.5% nickel, with carbon held below 0.08%. The material has a tensile strength of around 515 MPa and a yield strength of 205 MPa, which makes it strong enough for structural and mechanical use without being overly difficult to machine or form. Corrosion resistance is its most consistent advantage, particularly against atmospheric corrosion, freshwater, and a broad range of mild acids and chemicals, without the need for external coatings or surface treatments. These bars are supplied to food processing plants, pharmaceutical manufacturers, chemical processing units, construction and architectural projects, and automotive component manufacturers across India and for export.
Stainless Steel 304 Bars Prices
The Stainless Steel 304 Bar prices depend on raw material input costs, order quantity, and product specifications. Below is the detailed breakdown of what affects the final price.
Approximate Price Range
Stainless steel 304 bars are generally available in the range of Rs. 140 to Rs. 190 per kg. Light sections in standard round or flat profiles fall toward the lower end. Larger diameter bars, polished finishes, or material with third-party test certifications will be priced higher.
Factors Affecting Price
The grade composition is the starting point. SS 304 uses nickel and chromium as primary alloying elements, and both are traded as commodities on international markets, so price fluctuations in nickel directly affect bar pricing. Bar cross-section and weight per meter also matter. A 100mm diameter bar carries significantly more material per piece than a 10mm bar, so the total cost per piece differs substantially even at the same per-kg rate. Finishing requirements adds cost. A centerless ground or polished bar costs more than a black bar or pickled bar of the same size. Order size is a factor, too. Mill-run quantities are priced differently from distributor stock or small spot orders. Certifications like EN 10204 3.1 or third-party inspection by agencies like Lloyd's Register add to the final invoice.
Types of Stainless Steel 304 Bars
- Round Bar
- Square Bar
- Flat Bar
- Hexagonal Bar
- Rectangular Bar
Stainless Steel 304 Bars Specifications
The table provides the complete technical details for SS 304 bars, including standards, grade used, and key physical properties.
|
Parameter |
Specification |
|
Grade |
SS 304 (AISI 304, UNS S30400, WNR 1.4301) |
|
Standards |
ASTM A276, ASTM A479, ASME SA479, AMS 5639, AMS 5513 |
|
Other Names |
SUS 304 (JIS), X5CrNi18-10 (EN), 304S31 (BS), INOX 304, Z7CN18-09 (AFNOR) |
|
Density |
7.93-8.0 g/cm³ |
|
Melting Point |
1400-1450°C (2550-2642°F) |
|
Temperature Range |
425°C to 860°C (continuous service) |
|
Heat Resistance |
Up to ~870°C (1598°F) |
Stainless Steel 304 Bars Size Chart
The table below lists common diameters for stainless steel 304 round bars, along with their matching inch sizes and weight per meter, to help with buying and planning.
|
Diameter (mm) |
Diameter (inch) |
Weight (kg/m) |
|
3 |
1/8 |
0.055 |
|
4 |
5/32 |
0.098 |
|
5 |
3/16 |
0.154 |
|
6 |
1/4 |
0.222 |
|
7 |
5/16 |
0.302 |
|
8 |
3/8 |
0.395 |
|
9 |
7/16 |
0.500 |
|
10 |
1/2 |
0.617 |
|
12 |
9/16 |
0.888 |
|
14 |
5/8 |
1.21 |
|
15 |
3/4 |
1.39 |
|
16 |
13/16 |
1.58 |
|
17 |
7/8 |
1.78 |
|
18 |
1 |
2.00 |
|
20 |
1 1/8 |
2.47 |
|
22 |
1 1/4 |
2.98 |
|
24 |
1 3/8 |
3.55 |
|
25 |
1 1/2 |
3.85 |
|
30 |
1 5/8 |
5.55 |
|
32 |
1 3/4 |
6.31 |
|
35 |
1 7/8 |
7.55 |
|
36 |
2 |
8.00 |
|
38 |
2 1/8 |
8.88 |
|
40 |
2 1/4 |
9.86 |
|
45 |
2 1/2 |
12.48 |
|
50 |
2 3/4 |
15.42 |
|
60 |
3 |
22.19 |
|
70 |
3 1/2 |
30.00 |
|
80 |
4 |
39.46 |
|
90 |
4 1/2 |
49.90 |
|
100 |
5 |
61.65 |
|
150 |
6 |
138.70 |
|
200 |
8 |
246.60 |
|
250 |
10 |
384.90 |
|
300 |
12 |
554.00 |
|
400 |
16 |
986.00 |
|
500 |
20 |
1540.00 |
Dimensional Chart of Stainless Steel 304 Bars
The dimensional chart below gives diameter in both metric and imperial units, along with weight per meter, sectional area, and perimeter for each bar size, useful for structural calculations and material estimation.
|
Diameter (mm) |
Diameter (inch) |
Weight (kg/m) |
Sectional Area (cm²) |
Perimeter (cm) |
|
3 |
1/8 |
0.06 |
0.071 |
0.94 |
|
4 |
5/32 |
0.10 |
0.126 |
1.26 |
|
5 |
3/16 |
0.16 |
0.196 |
1.57 |
|
6 |
1/4 |
0.22 |
0.283 |
1.88 |
|
7 |
5/16 |
0.30 |
0.385 |
2.20 |
|
8 |
3/8 |
0.40 |
0.503 |
2.51 |
|
10 |
1/2 |
0.62 |
0.785 |
3.14 |
|
12 |
9/16 |
0.89 |
1.13 |
3.77 |
|
14 |
5/8 |
1.22 |
1.54 |
4.40 |
|
15 |
11/16 |
1.40 |
1.77 |
4.71 |
|
16 |
3/4 |
1.59 |
2.01 |
5.03 |
|
18 |
7/8 |
2.01 |
2.54 |
5.65 |
|
20 |
1 |
2.48 |
3.14 |
6.28 |
|
22 |
1 1/8 |
3.00 |
3.80 |
6.91 |
|
24 |
1 3/16 |
3.57 |
4.52 |
7.54 |
|
25 |
1 1/4 |
3.88 |
4.91 |
7.85 |
|
30 |
1 3/8 |
5.55 |
7.07 |
9.42 |
|
32 |
1 1/2 |
6.31 |
8.04 |
10.05 |
|
35 |
1 3/4 |
7.55 |
9.62 |
10.99 |
|
36 |
1 7/8 |
8.00 |
10.18 |
11.31 |
|
38 |
1 1/2 |
8.88 |
11.34 |
11.94 |
|
40 |
2 |
9.86 |
12.57 |
12.57 |
|
45 |
2 1/4 |
12.48 |
15.90 |
14.14 |
|
50 |
2 1/2 |
15.42 |
19.63 |
15.71 |
|
60 |
3 |
22.19 |
28.27 |
18.85 |
|
70 |
3 1/2 |
30.00 |
38.48 |
21.99 |
|
80 |
4 |
39.46 |
50.27 |
25.13 |
|
90 |
4 1/2 |
49.90 |
63.62 |
28.27 |
|
100 |
5 |
61.65 |
78.54 |
31.42 |
|
150 |
6 |
138.70 |
176.71 |
47.12 |
|
200 |
8 |
246.60 |
314.16 |
62.83 |
|
250 |
10 |
384.90 |
490.87 |
78.54 |
|
300 |
12 |
554.00 |
706.86 |
94.25 |
Key Features of Stainless Steel 304 Bars
SS 304 bars carry a set of properties that cover most standard industrial requirements. These are the characteristics that make this grade a default choice across sectors.
- Corrosion Resistance
- Mechanical Strength
- Formability and Ductility
- Weldability
- Hygienic Properties
- Non-Magnetic Nature
- Temperature Performance
Applications of Stainless Steel 304 Bars
These bars are specified across a broad set of sectors where material durability, surface integrity, or corrosion resistance is a baseline requirement.
- Fasteners and Hardware
- Food and Beverage Processing Equipment
- Medical and Pharmaceutical Components
- Chemical Processing Infrastructure
- Automotive and Transportation
- Architectural and Structural Supports
- Energy and Power Generation
- General Machining and Tooling
How To Choose The Right Stainless Steel 304 Bars Supplier and Manufacturer?
Choosing the right stainless steel 304 bars suppliers and manufacturers affects material quality, lead time, and project cost. These four points cover what to verify before placing an order.
Define the Requirements
Start with the grade, size, surface finish, and applicable standard. If the end application involves food contact, pharmaceutical, or pressure service use, that changes what certifications the bar needs to carry. Vague specifications lead to wrong material being supplied, and correcting that mid-project is expensive.
Check Quality and Certifications
Ask for mill test reports before committing to a supplier. The MTR should confirm chemical composition and mechanical properties in line with ASTM A276, ASTM A479, or whichever standard applies. Suppliers who offer documentation only after repeated follow-up are generally not the right fit for critical applications.
Evaluate Supplier Experience
An experienced supplier of stainless steel bars will be better able to keep stock on hand and have consistent delivery times. Verify if they have S30400 bars in stock or only available for special orders, which may have an influence on delivery schedules.
Compare Pricing and Delivery
Contact at least two or three suppliers of stainless steel 304 bars, and request a quotation for the same specification. The variation in quotes may be caused by grade substitutions, tolerance variations, or a lack of certifications. Confirm dispatch times and packaging specifications before finalising orders, particularly for polished or precision-ground bars, which may have a problem with damage in transit.
Stainless Steel 304 Bars are solid long products manufactured from AISI 304 grade austenitic stainless steel, an iron-chromium-nickel alloy containing 18-20% chromium and 8-10.5% nickel, with carbon held below 0.08%. The material has a tensile strength of around 515 MPa and a yield strength of 205 MPa, which makes it strong enough for structural and mechanical use without being overly difficult to machine or form. Corrosion resistance is its most consistent advantage, particularly against atmospheric corrosion, freshwater, and a broad range of mild acids and chemicals, without the need for external coatings or surface treatments. These bars are supplied to food processing plants, pharmaceutical manufacturers, chemical processing units, construction and architectural projects, and automotive component manufacturers across India and for export.
Stainless Steel 304 Bars Prices
The Stainless Steel 304 Bar prices depend on raw material input costs, order quantity, and product specifications. Below is the detailed breakdown of what affects the final price.
Approximate Price Range
Stainless steel 304 bars are generally available in the range of Rs. 140 to Rs. 190 per kg. Light sections in standard round or flat profiles fall toward the lower end. Larger diameter bars, polished finishes, or material with third-party test certifications will be priced higher.
Factors Affecting Price
The grade composition is the starting point. SS 304 uses nickel and chromium as primary alloying elements, and both are traded as commodities on international markets, so price fluctuations in nickel directly affect bar pricing. Bar cross-section and weight per meter also matter. A 100mm diameter bar carries significantly more material per piece than a 10mm bar, so the total cost per piece differs substantially even at the same per-kg rate. Finishing requirements adds cost. A centerless ground or polished bar costs more than a black bar or pickled bar of the same size. Order size is a factor, too. Mill-run quantities are priced differently from distributor stock or small spot orders. Certifications like EN 10204 3.1 or third-party inspection by agencies like Lloyd's Register add to the final invoice.
Types of Stainless Steel 304 Bars
- Round Bar
- Square Bar
- Flat Bar
- Hexagonal Bar
- Rectangular Bar
Stainless Steel 304 Bars Specifications
The table provides the complete technical details for SS 304 bars, including standards, grade used, and key physical properties.
|
Parameter |
Specification |
|
Grade |
SS 304 (AISI 304, UNS S30400, WNR 1.4301) |
|
Standards |
ASTM A276, ASTM A479, ASME SA479, AMS 5639, AMS 5513 |
|
Other Names |
SUS 304 (JIS), X5CrNi18-10 (EN), 304S31 (BS), INOX 304, Z7CN18-09 (AFNOR) |
|
Density |
7.93-8.0 g/cm³ |
|
Melting Point |
1400-1450°C (2550-2642°F) |
|
Temperature Range |
425°C to 860°C (continuous service) |
|
Heat Resistance |
Up to ~870°C (1598°F) |
Stainless Steel 304 Bars Size Chart
The table below lists common diameters for stainless steel 304 round bars, along with their matching inch sizes and weight per meter, to help with buying and planning.
|
Diameter (mm) |
Diameter (inch) |
Weight (kg/m) |
|
3 |
1/8 |
0.055 |
|
4 |
5/32 |
0.098 |
|
5 |
3/16 |
0.154 |
|
6 |
1/4 |
0.222 |
|
7 |
5/16 |
0.302 |
|
8 |
3/8 |
0.395 |
|
9 |
7/16 |
0.500 |
|
10 |
1/2 |
0.617 |
|
12 |
9/16 |
0.888 |
|
14 |
5/8 |
1.21 |
|
15 |
3/4 |
1.39 |
|
16 |
13/16 |
1.58 |
|
17 |
7/8 |
1.78 |
|
18 |
1 |
2.00 |
|
20 |
1 1/8 |
2.47 |
|
22 |
1 1/4 |
2.98 |
|
24 |
1 3/8 |
3.55 |
|
25 |
1 1/2 |
3.85 |
|
30 |
1 5/8 |
5.55 |
|
32 |
1 3/4 |
6.31 |
|
35 |
1 7/8 |
7.55 |
|
36 |
2 |
8.00 |
|
38 |
2 1/8 |
8.88 |
|
40 |
2 1/4 |
9.86 |
|
45 |
2 1/2 |
12.48 |
|
50 |
2 3/4 |
15.42 |
|
60 |
3 |
22.19 |
|
70 |
3 1/2 |
30.00 |
|
80 |
4 |
39.46 |
|
90 |
4 1/2 |
49.90 |
|
100 |
5 |
61.65 |
|
150 |
6 |
138.70 |
|
200 |
8 |
246.60 |
|
250 |
10 |
384.90 |
|
300 |
12 |
554.00 |
|
400 |
16 |
986.00 |
|
500 |
20 |
1540.00 |
Dimensional Chart of Stainless Steel 304 Bars
The dimensional chart below gives diameter in both metric and imperial units, along with weight per meter, sectional area, and perimeter for each bar size, useful for structural calculations and material estimation.
|
Diameter (mm) |
Diameter (inch) |
Weight (kg/m) |
Sectional Area (cm²) |
Perimeter (cm) |
|
3 |
1/8 |
0.06 |
0.071 |
0.94 |
|
4 |
5/32 |
0.10 |
0.126 |
1.26 |
|
5 |
3/16 |
0.16 |
0.196 |
1.57 |
|
6 |
1/4 |
0.22 |
0.283 |
1.88 |
|
7 |
5/16 |
0.30 |
0.385 |
2.20 |
|
8 |
3/8 |
0.40 |
0.503 |
2.51 |
|
10 |
1/2 |
0.62 |
0.785 |
3.14 |
|
12 |
9/16 |
0.89 |
1.13 |
3.77 |
|
14 |
5/8 |
1.22 |
1.54 |
4.40 |
|
15 |
11/16 |
1.40 |
1.77 |
4.71 |
|
16 |
3/4 |
1.59 |
2.01 |
5.03 |
|
18 |
7/8 |
2.01 |
2.54 |
5.65 |
|
20 |
1 |
2.48 |
3.14 |
6.28 |
|
22 |
1 1/8 |
3.00 |
3.80 |
6.91 |
|
24 |
1 3/16 |
3.57 |
4.52 |
7.54 |
|
25 |
1 1/4 |
3.88 |
4.91 |
7.85 |
|
30 |
1 3/8 |
5.55 |
7.07 |
9.42 |
|
32 |
1 1/2 |
6.31 |
8.04 |
10.05 |
|
35 |
1 3/4 |
7.55 |
9.62 |
10.99 |
|
36 |
1 7/8 |
8.00 |
10.18 |
11.31 |
|
38 |
1 1/2 |
8.88 |
11.34 |
11.94 |
|
40 |
2 |
9.86 |
12.57 |
12.57 |
|
45 |
2 1/4 |
12.48 |
15.90 |
14.14 |
|
50 |
2 1/2 |
15.42 |
19.63 |
15.71 |
|
60 |
3 |
22.19 |
28.27 |
18.85 |
|
70 |
3 1/2 |
30.00 |
38.48 |
21.99 |
|
80 |
4 |
39.46 |
50.27 |
25.13 |
|
90 |
4 1/2 |
49.90 |
63.62 |
28.27 |
|
100 |
5 |
61.65 |
78.54 |
31.42 |
|
150 |
6 |
138.70 |
176.71 |
47.12 |
|
200 |
8 |
246.60 |
314.16 |
62.83 |
|
250 |
10 |
384.90 |
490.87 |
78.54 |
|
300 |
12 |
554.00 |
706.86 |
94.25 |
Key Features of Stainless Steel 304 Bars
SS 304 bars carry a set of properties that cover most standard industrial requirements. These are the characteristics that make this grade a default choice across sectors.
- Corrosion Resistance
- Mechanical Strength
- Formability and Ductility
- Weldability
- Hygienic Properties
- Non-Magnetic Nature
- Temperature Performance
Applications of Stainless Steel 304 Bars
These bars are specified across a broad set of sectors where material durability, surface integrity, or corrosion resistance is a baseline requirement.
- Fasteners and Hardware
- Food and Beverage Processing Equipment
- Medical and Pharmaceutical Components
- Chemical Processing Infrastructure
- Automotive and Transportation
- Architectural and Structural Supports
- Energy and Power Generation
- General Machining and Tooling
How To Choose The Right Stainless Steel 304 Bars Supplier and Manufacturer?
Choosing the right stainless steel 304 bars suppliers and manufacturers affects material quality, lead time, and project cost. These four points cover what to verify before placing an order.
Define the Requirements
Start with the grade, size, surface finish, and applicable standard. If the end application involves food contact, pharmaceutical, or pressure service use, that changes what certifications the bar needs to carry. Vague specifications lead to wrong material being supplied, and correcting that mid-project is expensive.
Check Quality and Certifications
Ask for mill test reports before committing to a supplier. The MTR should confirm chemical composition and mechanical properties in line with ASTM A276, ASTM A479, or whichever standard applies. Suppliers who offer documentation only after repeated follow-up are generally not the right fit for critical applications.
Evaluate Supplier Experience
An experienced supplier of stainless steel bars will be better able to keep stock on hand and have consistent delivery times. Verify if they have S30400 bars in stock or only available for special orders, which may have an influence on delivery schedules.
Compare Pricing and Delivery
Contact at least two or three suppliers of stainless steel 304 bars, and request a quotation for the same specification. The variation in quotes may be caused by grade substitutions, tolerance variations, or a lack of certifications. Confirm dispatch times and packaging specifications before finalising orders, particularly for polished or precision-ground bars, which may have a problem with damage in transit.
Stainless Steel 304 Bars Suppliers
Stainless Steel 304 Bars FAQ's
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