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ASTM 321 310S Polished Stainless Steel Metal Pipe Rectangular
How stainless steel is made
The exact process for a grade of stainless steel will differ in the later stages. How a grade of steel is shaped, worked and finished plays a significant role in determining how it looks and performs.
Before you can create a deliverable steel product, you must first create the molten alloy.
Because of this most steel grades share common starting steps.
Step 1: Melting
Manufacturing stainless steel starts with melting scrap metals and additives in an electric arc furnace (EAF). Using high-power electrodes, the EAF heats the metals over the course of many hours to create a molten, fluid mixture.
As stainless steel is 100% recyclable, many stainless orders contain as much as 60% recycled steel. This helps to not only control costs but reduce environmental impact.
Exact temperatures will vary based on the grade of steel created.
Step 2: Removing Carbon Content
Carbon helps to increase the hardness and strength of iron. However, too much carbon can create problems—such as carbide precipitation during welding.
Stainless Steel Metal Pipe Specification
Name | ASTM 321 310S Polished Stainless Steel Metal Pipe Rectangular |
Items | 300 Series |
Standard | ASTM A554 |
304: Ni 8%, Cr 18% | |
Outer Diameter | 1"(25.4mm) |
Thickness | 0.24mm - 1.9mm |
Length | 4m, or as customers' request |
width | 14mm |
height | 10mm |
Tolerance | a) Outer Diameter: +/- 0.2mm |
b) Thickness: +/- 0.03mm | |
c) Length: +/- 5mm | |
Surface | annealing,pickling |
sandblasting | |
Application | industry,exhausting,welding,furniture,window |
Test | Squash test, extended test, water pressure test,heat treatment, NDT |
Elemental comparison of the different materials
Chemical Composition of Material | Material | 201 | 316L | 304 |
C | ≤0.15 | ≤0.035 | ≤0.08 | |
Si | ≤1.00 | ≤1.00 | ≤1.00 | |
Mn | 5.5-7.5 | 2 | ≤2.00 | |
P | ≤0.06 | ≤0.045 | ≤0.045 | |
S | ≤0.03 | ≤0.03 | ≤0.03 | |
Cr | 16-18 | 16-18 | 18-20 | |
Ni | 3.5-5.5 | 10-14 | 8-11 |