304 is a universal stainless steel, which is widely used in the manufacture of equipment and parts requiring good comprehensive properties (corrosion resistance and formability)
As a widely used steel, it has good corrosion resistance, heat resistance, low temperature strength and mechanical properties; good hot workability such as stamping and bending, no heat treatment hardening phenomenon (non-magnetic, operating temperature -196 ℃ ~ 800 ℃ ). Uses: medical appliances, building materials, chemicals, ship parts, auto parts, food industry, household items (tableware, cabinets, indoor pipelines, water heaters, bathtubs, etc.), agriculture.
Stainless steel has a series of characteristics such as excellent corrosion resistance, formability and toughness in a wide temperature range, so it has been widely used in heavy industry, light industry, daily necessities industry and building decoration industries. Different stainless steel varieties are very important.
In stainless steel, two opposing forces operate simultaneously: ferrite forming elements continue to form ferrite, and austenite forming elements continue to form austenite. The final crystal structure depends on the relative amounts of the two types of additive elements. Chromium is a ferrite forming element, so chromium in the formation of stainless steel crystal structure and the austenite forming element is a competitive relationship. Because iron and chromium are ferritic forming elements, the 400 series stainless steels are fully ferritic stainless steels with magnetic properties. In the process of adding the austenite forming element nickel to fe-Cr stainless steel, with the increase of nickel composition, the formation of austenite will gradually increase, until all the ferrite structure is transformed into austenite structure, thus forming 300 series stainless steel.
300 series stainless steel is an alloy material containing iron, carbon, nickel and chromium. It is a non-magnetic stainless steel material with better malleability than 400 series stainless steel. Due to the austenitic structure of 300 series stainless steel, it has strong corrosion resistance in many environments, excellent resistance to fracture caused by corrosion caused by metal overstress, and its material properties are not affected by thermal treatment.
304 stainless steel is the most widely used chromium-nickel stainless steel. As a widely used steel, it has good corrosion resistance, heat resistance, low temperature strength and mechanical properties; good hot workability such as stamping and bending, no heat treatment Hardening phenomenon (use temperature -196℃～800℃). Corrosion resistance in the atmosphere, if it is an industrial atmosphere or heavily polluted area, it needs to be cleaned in time to avoid corrosion. Suitable for processing, storage and transport of food
Equivalent Grades
| Grade |
Euronorm |
China GB |
Japanese JIS |
| No. |
| 304 |
1.4301 |
0Cr18Ni9 |
SUS304 |
Standard Specification
| Section |
Round, Square, Hexagonal bar, oval, shaped |
| Diamater |
0.254mm,1mm,10.0mm,25.4mm,50.8mm,76.2mm,101.6mm,127.0mm,152.4mm,300.0mm,600.0mm |
| Length |
Since the custom |
| Surface |
2B, 2D, BA, NO.1, NO.4, NO.8, 8K, mirror, checkered, embossed, hair line, sand blast, Brush, etching, etc |
| Finish |
Hot rolled, forged and cold drawn |
| Use |
medical appliances, building materials, chemicals, ship parts, auto parts, food industry ETC |
Composition content
| Grade |
C |
Mn |
Si |
P |
S |
Cr |
Mo |
Ni |
N |
| 304 |
Min.
Max. |
≤0.08 |
≤2.00 |
≤0.75 |
≤0.045 |
≤0.03 |
18.0～20.0 |
/ |
8.0-10.5 |
/ |
Tensile strength σb (MPa) : ≥520
Conditional yield strength σ0.2 (MPa) : ≥205
Elongation Δ5 (%) : ≥40
Section shrinkage ψ(%) : ≥50
Hardness: 187 hb or less;
90 HRB or less;
200 hv or less
Density :.280 LBS /cubic inch(density 7.93g/cm3)
Characteristic machining technology
1D -- The surface has discontinuous granular shape, also known as fog surface.
Processing technology: hot rolling + annealing shot peening pickling + cold rolling + annealing pickling.
2D - A slightly silvery white colour.
Processing technology: hot rolling + annealing shot peening pickling + cold rolling + annealing pickling.
2B -- Silver white with better gloss and flatness than a 2D surface.
Processing technology: hot rolling + annealing shot peening pickling + cold rolling + annealing pickling + quenching and tempering rolling.
Ba - Excellent surface gloss, high reflectivity, like a mirror surface.
Processing technology: hot rolling + annealing shot peening pickling + cold rolling + annealing pickling + surface polishing + quenching and tempering rolling.
No.3 -- Good gloss, coarse grain surface.
Processing technology: polishing and tempering rolling for 2D or 2B with 100~120 abrasive materials (JIS R6002).
No.4 -- Good gloss, fine lines on the surface.
Processing process: polishing and tempering rolling for 2D or 2B with 150~180 abrasive materials (JIS R6002).
HL -- Silver grey with hair streaks.
Processing technology: 2D products or 2B products with appropriate granularity of abrasive materials for polishing the surface is a continuous abrasive grain.
MIRRO -- Specular.
Processing technology: 2D products or 2B products with appropriate granularity of the grinding material grinding and polishing to the mirror effect.
Price List
| Stainless Steel 304 bar Price List |
304 bar FOB Shanghai Per Unit (USD) |
| 304 stainless steel Round Bar |
$2600.00-$2800.00 |
| 304 mirror Stainless Steel Bar |
$2700.00-$2900.00 |
| 304 Stainless Steel Black Bar |
$2700.00-$2900.00 |
| 304 Stainless Steel Square Bar |
$2600.00-$2800.00 |
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