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SANMAC® 316/316L
HOLLOW BAR
DATASHEET
Sanmac 316/316L is a molybdenum-alloyed austenitic chromium-nickel steel with improved machinability.
STANDARDS
Product standards
- The leakage test is deferred to the finished component Approval JIS Approval No. SE9402 for Stainless Steel Tubes
C ≤0.030 Si≤0.75 Mn≤2.00 P≤0.040 S≤0.030 Cr16.5 Ni 11 Mo2.
Sanmac insufficient corrosion resistance. Typical applications are: 316/316L is used for a wide range of industrial applications where steels of type ASTM 304/304L have
General corrosion Sandvik Sanmac 316/316L has good resistance to:
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- – ASTM: MT 316, MT 316L UNS: S31600, S
- – EN Number: 1.4401, 1.4404 EN Name: X 5 CrNiMo 17-12-2, X 2 CrNiMo 17-12-
- JIS: SUS316TKA
- – EN 10216-5*, EN 10297-2, EN 10294-2 ASTM A
- JIS G
CHEMICAL COMPOSITION (NOMINAL) %
APPLICATIONS ®
- – Machined parts for tube and pipe fittings Components for valves, pumps, heat exchangers and vessels
- Different tubular shafts in chemical, petrochemical, fertilizer, pulp and paper and power industries as well as in the production of pharmaceuticals, foods and beverages
CORROSION RESISTANCE
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- Organic acids at high concentrations and temperatures, with the exception of formic acid and acids with corrosive contaminants Datasheet updated 12/10/2020 7:47:29 AM (supersedes all previous editions)
Intergranular corrosion Sandvik Sanmac 316/316L has a low carbon content and therefore good resistance to intergranular corrosion.
Stress corrosion cracking Austenitic steels are susceptible to stress corrosion cracking. This may occur at temperatures above about 60°C
(140°F) if the steel is subjected to tensile stresses and at the same time comes into contact with certain solutions, particularly those containing chlorides. In applications demanding high resistance to stress corrosion cracking, the austenitic-ferritic steels Sandvik SAF 2304, Sandvik 10RE51 or Sandvik Sanmac resistance to stress corrosion cracking than 316L. 2205 have higher
Pitting and crevice corrosion Resistance to these types of corrosion improves with increasing molybdenum content. Thus, the molybdenum-
alloyed Sandvik Sanmac 304L. 316/316L has substantially higher resistance to attack than steels of type AISI 304 and
Gas corrosion Sandvik Sanmac 316/316L can be used in:
Creep behavior should also be taken into account when using the steel in the creep range. In flue gases containing sulfur, the corrosion resistance is reduced. In such environments the steel can be used at temperatures up to 600-750°C (1110-1380°F) depending on service conditions. Factors to consider are whether the atmosphere is oxidizing or reducing, i.e. the oxygen content, and whether impurities such as sodium and vanadium are present.
Hollow bar-Finishes, dimensions and tolerances Hollow bar Sanmac 316/316L is stocked in a large number of sizes up to 250 mm outside diameter in the solution-annealed and white-pickled condition. See catalogue S-110-ENG or S-1492-ENG.
Dimensions are given as outside and inside diameter with guaranteed component sizes after machining. Outside diameter +2 / -0 %, but minimum +1 / -0 mm Inside diameter +0 / -2 %, but minimum +0 / -1 mm Straightness +/-1.5mm/m Other tolerances can be supplied against special order. Other forms of supply Bar Steel with improved machinability, Sanmac, is also available in bar.
Hollow bar is delivered in heat treated condition. If further heat treatment is needed after further processing the following is recommended:
Stress relieving 850-950°C (1560-1740°F), cooling in air.
Inorganic acids, e.g. phosphoric acid, at moderate concentrations and temperatures, and sulfuric acid below 20% at moderate temperatures. The steel can also be used in sulfuric acid of concentrations above 90% at low temperature.
- – E.g. sulfates, sulfides and sulfites Caustic environments
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- – Air up to 850°C (1560°F) Steam up to 750°C (1380°F)
FORMS OF SUPPLY
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HEAT TREATMENT
Datasheet updated 12/10/2020 7:47:29 AM (supersedes all previous editions)
Temperature °C Proof strengthR R MPa min. MPamin.
Metric units p0.2 a^ p1. (^450500 123120 ) 550 115 140 600 110 135 Temperature °F Proof strengthR R ksi min. ksimin.
Imperial units
Density: 8.0 g/cm , 0.29 lb/in
Temperature, °C W/m °C Temperature, °F Btu/ft h °F
Thermal conductivity (^20100 1415 20068 8) 8. 200 17 400 10 300400 1820 800600 10.511. 600500 2321 11001000 13 12. Temperature, °C J/kg °C Temperature, °F Btu/lb °F Specific heat capacity 20100 485500 68200 0.110. 200300 515525 400600 0.120. 400 540 800 0.
p0.2 a^ p1.
PHYSICAL PROPERTIES 3 3
Datasheet updated 12/10/2020 7:47:29 AM (supersedes all previous editions)
Temperature, °C J/kg °C Temperature, °F Btu/lb °F
Specific heat capacity 500 555 1000 0. 600 575 1100 0. Temperature, °C Per °C Temperature, °F Per °F
Thermal expansion, mean values in temperature ranges (x10 ) 30-100 30-200 16.5 17 86-20086-400 9.59. 30-300 17.5 86-600 10 30-400 30-500 1818 86-80086-1000 (^1010) 30-600 30-700 18.518.5 86-120086-1400 10.510.
Temperature, °C MPa Temperature, °F ksi Modulus of elasticity, (x10 ) 20100 200194 68200 29.028. 200300 186179 400600 26.925. 400500 172165 8001000 24.723.
The weldability of SANMAC (MMA/SMAW) and gas-shielded arc welding, with the TIG/GTAW method as first choice. 316/316L is good. Suitable methods of fusion welding are manual metal-arc welding
Since this material is alloyed in such a way to improve its machinability, the amount of surface oxides on the welded beads might be higher compared to that of the standard 316L steels. This may lead to arc instability during TIG/GTAW welding, especially welding without filer material. However, the welding behavior of this material is the same as for standard 316L steels when welding with filler material. For SANMAC recommended. Preheating and post-weld heat treatment are normally not necessary. 316/316L, heat input of <2.0 kJ/mm and interpass temperature of <150°C (300°F) are
Recommended filler metals TIG/GTAW or MIG/GMAW welding
ISO 14343 S 19 12 3 L / AWS A5.9 ER316L (e.g. Exaton 19.12.3.L) MMA/SMAW welding ISO 3581 E 19 12 3 L R / AWS A5.4 E316L-17(e.g. Exaton 19.12.3.LR)
Sanmac stands for Sandvik Machinability Concept. In Sanmac materials, machinability has been improved
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WELDING ®
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MACHINING ® ®
Datasheet updated 12/10/2020 7:47:29 AM (supersedes all previous editions)
