303 stainless steel pipe is an industrial supply for applications requiring easy cutting and high surface finish.
303 Stainless steel pipe Price in China ,Manufacturer of 303 Stainless Steel pipe
Scope of application: petroleum, electronics, chemical, medicine, textile, food, machinery, construction, nuclear power, aerospace, military and other industries!
Quality management :ISO9001:2000 quality management system certification, production license and so on!
303 is a free cutting stainless steel containing sulfur and selenium, respectively. Stainless steel 303 improves cutting performance and high temperature bonding.
Best suited for automatic lathes.
Bolts and nuts.
303 stainless steel is austenitic free cutting stainless wear-resistant acid steel. In order to improve the performance of the steel, no more than 0.60% molybdenum can be added to the steel. It has good ablation resistance and good cutting and burning resistance.
Corrosion resistance. Mechanical properties of 303 stainless steel after annealing to remove stress, tensile strength 515MPa, yield 205MPa, elongation 40%.
Standard hardness of stainless steel 303 HRB 90-100, HRC 20-25, note: HRB100 = HRC20
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 pipe 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.
Compared with 304 steel, the content of Cr and Ni is less, the tensile strength and hardness increase during cold working, and it is non-magnetic, but it is magnetic after cold working. Uses: trains, aircraft, conveyor belts, vehicles, bolts, nuts, springs, screens.
Equivalent Grades
| Grade |
Euronorm |
China GB |
Japanese JIS |
| No. |
| 303 |
1.4305 |
Y1Cr18Ni9 |
SUS303 |
Standard Specification
| Types of stainless steel pipes |
round pipe,squard pipe ,rectangular pipe,oval tube,and pipe in roll. |
| pipe thickness |
0.2-200mm |
| out diameter |
3mm，6mm,10mm,12mm,60mm,80mm,102mm,180mm,245mm,530mm,630mm etc. |
| type of the pipe |
weld pipe and sealess pipe. |
| length |
1000mm,3000mm,5800mm,6000mm,12000mm ,and any length you want,etc. |
| surface |
Hot rolled (HR), Cold rolled Tube (CR), 2B, 2D, BA NO(8), SATIN (Met with Plastic Coated) |
Composition content
| Grade |
C |
Mn |
Si |
P |
S |
Cr |
Mo |
Ni |
N |
| 303 |
Min.
Max. |
≤0.15 |
≤2.00 |
≤1.00 |
≤0.20 |
≥0.15 |
17.0～19.0 |
/ |
8.0-10.0 |
/ |
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 303 pipe Price List |
FOB Shanghai Per Unit (USD) |
| 303 stainless steel Round pipe |
$1200.00-$2000.00 |
| 303 mirror/no.4 Stainless Steel pipe |
$1500.00-$2200.00 |
| 303 Stainless Steel Square pipe |
$1200.00-$2000.00 |
| 303 seamless pipe |
$1400.00-$2050.00 |
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