Introduction:

Grade 316 is the standard molybdenum-bearing grade, second in importance to 304 amongst the austenitic stainless steels. the molybdenum gives 316 better overall corrosion resistant properties than Grade 304, particularly higher resistance to pitting and crevice corrosion in chloride environments.

Grade 316L, the low carbon version of 316 and is immune from sensitisation (grain boundary carbide precipitation). Thus it is extensively used in heavy gauge welded components (over about 6mm). There is commonly no appreciable price difference between 316 and 316L stainless steel.

the austenitic structure also gives these grades excellent toughness, even down to cryogenic temperatures.

Compared to chromium-nickel austenitic stainless steels, 316L stainless steel offers higher creep, stress to rupture and tensile strength at elevated temperatures.

Grade 316 is the standard molybdenum-bearing grade, second in importance to 304 amongst the austenitic stainless steels. the molybdenum gives 316 better overall corrosion resistant properties than Grade 304, particularly higher resistance to pitting and crevice corrosion in chloride environments.

Grade 316L, the low carbon version of 316 and is immune from sensitisation (grain boundary carbide precipitation). Thus it is extensively used in heavy gauge welded components (over about 6mm). There is commonly no appreciable price difference between 316 and 316L stainless steel.

the austenitic structure also gives these grades excellent toughness, even down to cryogenic temperatures.

Compared to chromium-nickel austenitic stainless steels, 316L stainless steel offers higher creep, stress to rupture and tensile strength at elevated temperatures.

Mechanical Properties 

Table 2.Mechanical properties of 316L stainless steels.

Grade	Tensile Str (MPa) min	Yield Str 0.2% Proof (MPa) minYin	Elong (% in 50mm) min	Rockwell B (HR B) max	Brinell (HB) max
316L	485	170	40	95	217

the physical properties of 316:

Tensile strength (MPa), 515 min, yield strength  (MPa) 205 min, 0.2 5 (%) of 40 or higher elongation delta, reduction of area bits (%) of 60 or more,

Grade	Density (kg/m3)	Elastic Modulus (GPa)	Mean Co-eff of Thermal Expansion (μm/m/°C)			Thermal Conductivity (W/m.K)		Specific Heat 0-100°C (J/kg.K)	Elec Resistivity (nΩ.M)
			0-100°C	0-315°C	0-538°C	at 100°C	at 500°C
316/L/H	8000	193	15.9	16.2	17.5	16.3	21.5	500	740

Standard:
ASTM.............. 316,S31600
EURONORM....,1.4401

JIS...................SUS316

Folding corrosion

Corrosion resistance than 304 stainless steel with good corrosion performance in the pulp and paper production process. and 316 stainless steel is also resistant to aggressive industrial marine and atmospheric erosion.

Folding heat resistance

at 871 ° C intermittent use (1600 ° F) below and at 927C ° (1700 ° F) or more continuous use, 316 (06Cr17Ni12Mo2) has good resistance to oxidation. In the range of 427 ° C-857 ° C (800 ° F-1575 ° F), it is best not continuous use 316 stainless steel, but when outside the temperature range of continuous use 316 stainless steel, the stainless steel has good heat resistance. Resistant 316L stainless steel carbide precipitation performance better than the 316 stainless steel, available above temperature range.

Folding Heat Treatment

Carried out in a temperature range of 1850-2050 ° F annealing, then rapidly annealed and then rapidly cooled. 316 stainless steel can not be hardened by heat treatment.

Folding Welding

316 stainless steel has good weldability. All standard welding methods can be used for welding. Welding according to use, respectively 316Cb, 316L stainless steel or 309Cb welding filler rods or rod. for optimum corrosion resistance, stainless steel welding section 316 require post-weld annealing. If you use annealed 316L stainless steel, does not require welding

316 & 316L Composition

• Carbon 0.030 – 0.080
• Chromium 16.0-18.0
• Manganese 2.0
• Molybdenum 2.0-3.0
• Nickel 10.0-14.0
• Silicon 1.00
• Sulfur 0.030

Backed by Industry Standards

• UNS S31600/03
• ASTM A182
• ASTM A276
• ASTM A479

Applications:

Pulp and paper equipment heat exchangers, dyeing equipment, film processing equipment, pipelines, coastal areas outside the building materials.

2013 should also be in electromagnetic field of valves, mainly for housing, clamps, ball, valve, valve seat, nut, stem and so on.