440 stainless steel pipe advantage

1. 1.Corrosion resistance — All types of grade 440 stainless steel have a high corrosion resistance. Therefore, grade 440 is ideal for use in tempered, passivated, and hardened conditions.
2. 2.Heat resistance — Grade 440 stainless steel has excellent heat resistance and should not be used at temperatures below a set tempering temperature; over-tempering can result in a loss of mechanical properties.
3. 3.Heat treatability — This versatile material can be annealed at about 850-900 °C prior to slow furnace cooling at about 600 °C and air cooling. It can also be heated at 1010-1065 °C then quenched in air or oil for hardening.
4. 4.Weldability — During welding, grade 440 stainless steel is preheated at 250 °C, followed by full annealing.
5. 5.Machinability — 440 stainless steel can be easily machined in an annealed state.

440 stainless steel pipe chemical composition

C	Mn	Si	Mo	Ni	N	P	S	Cr
0..95-1.20	1.00	1.00	0.75	-	-	0.040	0.030	16.00-18.00

440 stainless steel pipe mechanical property

Tempering Temperature (°C)	Tensile Strength (MPa)	Yield Strength 0.2% Proof (MPa)	Elongation (% in 50mm)	Hardness Rockwell (HR C)	Impact Charpy V (J)
Annealed*	758	448	14	269HB max#	-
204	2030	1900	4	59	9
260	1960	1830	4	57	9
316	1860	1740	4	56	9
371	1790	1660	4	56	9

440 stainless steel pipe specification

Standard	ASTM A213,A312,ASTM A269,ASTM A778,ASTM A789,DIN 17456, DIN17457,DIN 17459,JIS G3459,JIS G3463,GOST9941,EN10216, BS3605, GB13296
Material	304,304L,309S,310S,316,316Ti,317,317L,321,347,347H,304N,316L, 316N,201, 202，440
Surface	Polishing,annealing,pickling,bright
Type	hot rolled and cold rolled Seamless or Welded
Delivery time	Prompt delivery or as the order quantity.
Package	Standard export seaworthy package,or as required.
Application	Widely used in petroleum,foodstuff,chemical industry,construction, electric power,nuclear,energy,machinery,biotechnology,paper making,shipbuilding,boiler fields. Pipes also can be made according to the customer's required.
Contact	If you have any questions,please feel free to contact me.
Container size	20ft GP:5898mm(Length)x2352mm(Width)x2393mm(High) 24-26CBM 40ft GP:12032mm(Length)x2352mm(Width)x2393mm(High) 54CBM 40ft HC:12032mm(Length)x2352mm(Width)x2698mm(High) 68CBM