316L is a stainless steel material grade, AISI 316L is the corresponding American grade, SUS 316L is the corresponding Japanese grade.
China's uniform digital code for S31603, the standard grade for 022CR17NI12MO2 (new standard), the old grade for 00CR17NI14MO2, said it mainly contains Cr, Ni, Mo, the number says it probably contains a percentage.
316L has a wide range of applications in the chemical industry because of its excellent corrosion resistance. 316L is also a derivative of 18-8 austenitic stainless steel, with 2 ~ 3% Mo element added.
On the basis of 316L, many kinds of steel are also derived. For example, 316Ti is derived after adding a small amount of Ti, 316N is derived after adding a small amount of N, and 317L is derived by increasing the content of Ni and Mo.
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.
Most of the existing 316L in the market are produced according to American standards.
For cost consideration, steel mills generally put the Ni content of products as far as possible by the lower limit.
The American standard stipulates that the Ni content of 316L is 10 ~ 14%, while the Japanese standard stipulates that the Ni content of 316L is 12 ~ 15%.
According to the minimum standard, there is a 2% difference between the American standard and Japanese standard in the Ni content, which is still quite huge in the price. Therefore, customers still need to see clearly when buying 316L products, whether the products refer to ASTM or JIS standards.
The Mo content of 316L makes the steel have excellent pitting resistance and can be safely used in environments containing Cl- and other halogen ions.
Because 316L is mainly used for its chemical properties, steel mills have slightly lower requirements for surface inspection of 316L (relative to 304), and customers with higher surface requirements should strengthen surface inspection.
Equivalent Grades
| Grade |
Euronorm |
China GB |
Japanese JIS |
| No. |
| 316 L |
1.4404 |
022Cr17Ni12Mo2 |
SUS316 L |
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 |
Ti |
| 316 L |
Min.
Max. |
≤0.03 |
≤2.00 |
≤1.00 |
≤0.045 |
≤0.03 |
16.0～18.0 |
2.0~3.0 |
10.0～14.0 |
/ |
Yield strength/Mpa: ≥177
Tensile strength /MPa: ≥480(hardness HB≤187)
Elongation /% : ≥40
Section shrinkage ψ(%) : ≥60
Hardness: 187 hb or less;
90 HRB or less;
200 hv or less
Density: 7.98g/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 316 pipe Price List |
FOB Shanghai Per Unit (USD) |
| 316 stainless steel Round pipe |
$2200.00-$3200.00 |
| 316 mirror/no.4 Stainless Steel pipe |
$2300.00-$5000.00 |
| 316 Stainless Steel Square pipe |
$2500.00-$4500.00 |
| 316 seamless pipe |
$2400.00-$4200.00 |
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