ER 321

 

Standard: AWS A 5.9

ER 321 is a chromium-nickel stainless steel and with the addition of titanium, type 321 is resistant to intergranular corrosion.  Type 321's general corrosion is less than 302.  Type 321 is used where resistance to intergranular corrosion is required and where the parts are subjected to sustained heating or cooling within the range of 800 to 1500ºF. Type 321 is commonly used in applications such as exhaust stacks, manifolds and ring collectors.

 

Wire Type	Wire Size			Packing				Net Weight
MIG Wire	φ0.8~1.6(mm)			D100mm　 D200mm 　D300mm　 D270mm				1kg 5kg 12.5kg 15kg 20kg
TIG Wire	φ1.6~5.5(mm)			1 meter/Boxes				5kg 10kg
Core wire	φ1.6~5.5(mm)			Coil or Drum				30kg – 500kg
Grade	Chemical composition of welding wire (%)
	C	Cr	Ni		Mo	Mn	Si		P	S	Cu
ER321	0.08	18.5–20.5	9.0–10.3		0.75	1.0–2.5	0.30–0.65		0.03	0.03	0.75

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