SUS310, sus310s

E Steel Sdn Bhd are Asia Metal traders, exporters, manufacturers agent, providing Alloy Steel, Nickel Alloy, Stainless Steel, Titanium to the wide arrays of engineering industries/sectors.

We carry a wide range of high-performing stainless steel and nickel alloy & titanium material, perfect for your Medical & Grove industries related needs.

  • Titanium ( CP ,Grade 2 & Ti6AL4V , Grade 5, TP340 )
  • Monel 400 , K500,  # Inconel 600, 601, 625, 718,  # Hastelloy C276, C22, B2, X ,  # Incoloy 800, 825, 925, A286
  • Stainless Steel : SUS301,SUS303,SUS304,SUS304H,SUS309,253MA,SUS310,316Ti,SUS317,SUS321,SUS347)
  • Stainless Steel : SUS403,SUS409,SUS410,SUS416,SUS420,SUS420J2,SUS430,SUS430F,SUS431,SUS440C, F6NM, SUS446,SUS630, 15-5PH,904L, FERRALIUM 255, S31803, S32750, S32760 , S31254 , S329J4L ,Nitronic 30, 50 & 60

Description

Stainless Steel – Grade 310, SUS310, SUS310S, UNS S31008, 1.4840, 104845

Chemical Formula

Fe, <0.25% C, 24-26% Cr, 19-22% Ni, <2% Mn, <1.5% Si, <0.45% P, <0.3% S

 

Background

SUS310, combining excellent high temperature properties with good ductility and weldability, is designed for high temperature service. It resists oxidation in continuous service at temperatures up to 1150°C provided reducing sulphur gases are not present. It is also used for intermittent service at temperatures up to 1040°C.

 

SUS310S (UNS S31008) is used when the application environment involves moist corrodents in a temperature range lower than that which is normally considered “high temperature” service. The lower carbon content of 310S does reduce its high temperature strength compared to SUS310.

 

Like other austenitic grades these have excellent toughness, even down to cryogenic temperatures, although other grades are normally used in this environment.

 

Chemcial Composition of Grade 310/310S Stainless Steel

Grade C Mn Si P S Cr Mo Ni N
SS310 min.

max.

0.25

2.00

1.50

0.045

0.030

24.0

26.0

19.0

22.0

SS310S min.

max.

0.08

2.00

1.50

0.045

0.030

24.0

26.0

19.0

22.0

 

Mechanical PropertiesTypical mechanical properties for SUS310 stainless steels

Grade Tensile Strength (MPa) min Yield Strength 0.2% Proof (MPa) min Elongation (% in 50mm) min Hardness
Rockwell B (HR B) max Brinell (HB)
max
SS 310 515 205 40 95 217
SS 310S 515 205 40 95 217

 

Comparison Approximate grade  for 310 stainless steels.

Grade UNS No Old British Euronorm Swedish SS Japanese JIS
BS En No Name
SS310 S31000 310S24 1.4840 X15CrNi25-20 SUH 310
SS310S S31008 310S16 1.4845 X8CrNi25-21 2361 SUS 310S

 

These comparisons are approximate only. The list is intended as a comparison of functionally similar materials not as a schedule of contractual equivalents. If exact equivalents are needed original specifications must be consulted.

 

 

 

Alternative grades to grade 310 stainless steels are given .

Grade Why it might be chosen instead of SS310
3CR12 Heat resistance is needed, but only to about 600°C.
SS304H Heat resistance is needed, but only to about 800°C.
SS321 Heat resistance is needed, but only to about 900°C. Subsequent aqueous corrosion resistance also required.
253MA (2111HTR) A slightly higher temperature resistance is needed than can be provided by 310. Better resistance to reducing sulphide atmosphere needed. Higher immunity from sigma phase embrittlement is required.

 

Corrosion ResistanceThe high chromium content – intended to increase high temperature properties – also gives these grades good aqueous corrosion resistance. The PRE is approximately 25, and seawater resistance about 22°C, similar to that of SS316. Excellent resistance at normal temperatures, and when in high temperature service exhibits good resistance to oxidising and carburising atmospheres. Resists fuming nitric acid at room temperature and fused nitrates up to 425°C.

Subject to stress corrosion cracking but more resistant than Grades SS304 or SS316.

 

Heat Resistance

Good resistance to oxidation in intermittent service in air at temperatures up to 1040°C and 1150°C in continuous service. Good resistance to thermal fatigue and cyclic heating. Widely used where sulphur dioxide gas is encountered at elevated temperatures. Continuous use in 425-860°C range not recommended due to carbide precipitation, if subsequent aqueous corrosion resistance is needed, but often performs well in temperatures fluctuating above and below this range.

 

SUS310 is generally used at temperatures starting from about 800 or 900°C – above the temperatures at which SS304H and SS321 are effective.

Heat TreatmentSolution Treatment (Annealing) – heat to 1040-1150°C and cool rapidly for maximum corrosion resistance. This treatment is also recommended to restore ductility after each 1000 hours of service above 650°C, due to long term precipitation of brittle sigma phase.

 

These grades cannot be hardened by thermal treatment.

 

Applications include:

 

  • Furnace parts
  • Oil burner parts
  • Carburising boxes
  • Heat Treatment baskets and jigs
  • Heat Exchangers
  • Welding filler wire and electrodes