305 1.4303 Stainless Steel Pipes and Tubes

aisi-305-stainless-steel-seamless-pipes-tubes

Type 305 stainless steel is widely used for the production of parts by free spinning and cold heading operations, and it is particularly suitable for severe cold drawing, especially where the part can be completely formed in two draws. In many instances, the intermediate anneal can be eliminated when Type 305 is used. In drawing, the metal should be allowed to slip freely through the hold-down pads, thus holding stretching to a minimum. Used widely for electronic parts and other drawn applications.

Chemical Composition:

305 Stainless Steel Pipe d

C	Mn	P	S	Si	Cr	NI	Mo	Cu	Other	M/NM
0.12	2.0	0.045	0.03	1.0	17.0 – 19.0	11.0 – 13.0				NM

Applications	Any application requiring maximum formability such as spun or deep drawn eyelets, barrels, shells, cold headed rivets or screws will work well.
Machinability	Slow speeds and heavy feeds are recommended to combat the material’s tendency to glaze during machining.
Welding	Most of the common fusion and resistance methods can be used here. Filler metal, if necessary, should be AWS E/ER308. Oxyacetylene welding is not recommended.
Hot Working	Forging, heading and other hot working should follow uniform heating to 2100-2300 °F (1149-1260 °C). Rapid cooling is necessary to attain maximum corrosion resistance in finished parts.
Cold Working	Cold work is one of the design strengths of this alloy. It can be drawn, spun, headed and blanked readily due primarily to its low work hardening rate.
Annealing	1850-2050 °F (1010-1121 °C) followed by rapid cooling.

This alloy does not respond to heat treatment. Cold work will cause an increase in both hardness and strength.

Physical Properties:

Density (lb / cu. in.)	0.29
Specific Gravity (kg/dm³)	7.93
Specific Heat (Btu/lb/Deg F – [32-212 °F])	0.12
Electrical Resistivity (microhm-cm (at 68 °F))	432
Melting Point (°F)	2650
Magnetic Permeability	1.003
Modulus of Elasticity Tension	28