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Small Bore 316 Stainless Steel Pipe Tube 20*10mm JIS 3M Decoiling
About the magnetism of the stainless steel
All stainless steel is NOT necessarily non-magnetic. It is common
for stainless to pick up iron ions from the die and tool used
during the stamping process. Iron ions cause magnetism and later
may cause minor rust. The casters you received are stainless steel
even though your magnet may stick to them. We use 304 stainless to
make our stainless casters. We do not use 316 stainless because it
would ruin our tooling. Our customers use our stainless casters and
it is very rare that there is a problem with rust unless their
application is extremely caustic. If your application is extremely
caustic you should require stainless steel that has gone through
both the passivation and annealing processes. Passivation enhances
the rust resistance of the stainless surface. The passivation
process is not meant to completely restore non-magnetic property.
It is only a relatively economic way to enhance corrosion
resistance. It is available on special order for very large volume
at substantial extra cost on some of our stainless casters. We use
the passivation process standard only on stainless caster model
G15. It removes all ions. Annealing is the most effective way to
restore non-magnetic property and enhance corrosion resistance.
However, in this process if the stainless is not heat treated high
enough and then cooled down slowly the corrosion resistance of the
stainless steel will be reduced. Annealing stainless is almost cost
prohibitive. When both processes are applied, passivation should be
done after annealing.
316 Stainless Steel Pipe Specification
Name | Small Bore 316 Stainless Steel Pipe Tube 20*10mm JIS 3M Decoiling |
Items | 316L Stainless Steel Pipe |
Standard | ASTM A554 |
Material Grade | 316L:Ni10%,Cr16% |
Width | 20mm |
Height | 10mm |
Thickness | 0.8mm |
Length | 3m, or as customers' request |
Tolerance | a)Width Height: +/- 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 |
Stainless Steel Pipe Chemical Component( %)
Grade ASTM | C | Si | Mn | S | P | Cr | Ni |
316 | ≤0.035 | ≤1.00 | 2 | ≤0.03 | ≤0.045 | 16-18 | 10-14 |
304 | ≤0.07 | ≤1.00 | ≤2.00 | ≤0.030 | ≤0.035 | 17.00-19.00 | 8.00-11.00 |