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Stainless Steel 316L (UNS S31600)

DataTime:[7/1/2014]

SPECIFICATIONS: GRADE 316 / 316L | UNS S31600 / 31603 | ASTM/ASME A240 | Werkstoff 1.4404 / 04

All 316L at Yaang Pipe is certified to 316/316L which we stock at our warehouse in the CN with the capabilities to supply directly to countries across the world in all Stainless Steel Flanges, Stainless Steel Pipe Fittings, and Stainless Steel Pipe.

Stainless Steel 316L is the standard molybdenum bearing grade. It has an extensive variety of uses especially in marine applications due to the materials high corrosion resistance.

This stainless steel is popular for use in severely corrosive environments due to the materials immunity from boundary carbide precipitation. The material is widely used in heavy gauge welded components and weld annealing is only required where the material is for use in high stress environments.

Technical Information:

Stainless steel 316L (all) is one of the basic grade of the stainless steel range. 2% molybdenum bearing ensures better corrosion resistance than CLC 18-9L grade, particularly regarding to uniform and localised corrosion.

Stainless steel 316L is an austenitic microstructure grade, free of deleterious carbide precipitations in grain boundaries. The grade contains some residual ferrite (3%) after solution annealing (1050-1150°C – 1922-2102°F) and water quenching. Chemistry and heat treatments may be optimised in order to control the ferrite content.

Stainless steel 316L resists to wet atmosphere or room temperature solutions containing some chloride or fluoride additions. The steel is not seawater resistant. The alloy may be used in diluted sulphuric acids at low temperature (≤ 330°C – 626°F) as well as in sour organic solutions.

The grade is also well known for its higher ductility, particularly when considering cold forming.

Typical values (weight %)
C Cr NI Mo N Others
0.020 17 10.5 2.1 0.05 -
PREN (%Cr+3.3%Mo+16%N) ≥ 24
Tensile properties after water quenching
°C °F Minimum guaranteed values * Typical values El %
Y.S. 0.2% Y.S. 1% UTS Y.S. 0.2% Y.S. 1% UTS
MPa Ksi MPa Ksi MPa Ksi MPa Ksi MPa Ksi MPa Ksi
20 68 220 32 260 38 520/670 76/98 310 44 350 51 680 85 45
100 212 166 24 199 29 430 63 280 40 330 48 490 72 43
200 392 137 20 167 24 390 57 200 28 230 33 450 66 35
300 572 118 17 145 21 380 56 175 25 200 30 440 64 35
400 752 108 16 135 20 380 56 450 22 180 29 430 63 30
500 932 100 15 128 19 360 52 135 19 165 24 410 60 30

* Following EN 10088 hot rolled plates – The EN guaranteed values are valid for a thickness from 5-75mm.

Impact values
°C -196* -196 +20 θ (°C) 450 550 650 700 750 800 850
°F -452* -320 68 θ (°F) 842 1022 1202 1292 1382 1472 1562
KCV (J/cm²)
Minimum
75 125 187 Ageing H 2000 2000 2000 2000 500 500 500
KCV (J/cm²)
Typical
125 250 312 KCU J/cm² 230 245 155 140 140 145 165

* Optimised heats with extra low ferrite.

Interval
temper
°C
Thermal
expansion
αx10-6K-1
°C °F Resistivity
(µΩ cm)
Thermal
conductivity
(W.m-1.K-1)
Specific
heat
(J.kg-1.K-1)
Young
modulus
E
(GPa)
Shear
modulus
G
(GPa)
20-100 16 20 68 75 15 500 200 77
20-200 16.5 100 212 80 16 500 194 74
20-300 17 200 392 85 17.5 520 188 70.5
20-400 17.5 300 572 92 19 530 172 66.5
20-500 18 400 752 95 20.5 540 172 62.5
500 932 100 22 540 165 59.5

Magnetic permeability: 1.015-1.050 (skin).

Quality corrosion tests guaranteed (special request may be discussed)
TEST Other name Corrosion (1) Results
ASTM A 262 A Intergranular Step or dual structure
ASTM A 262 B STREICHER Intergranular ≤ 1mm/year (not sensitived)
ASTM A 262 C HUEY Intergranular < 0,6mm/year*
ASTM A 262 E
DIN 50914 RCCM
STRAUSS Intergranular No cracking after bending
ASTM G48 A Pitting Not recommended (typical CCT 5°)
ASTM G48 B ASTM G78 Crevice Not recommended (typical CCT 5°)

(1) kind of corrosion mechanism investigated

* Using low ferrite grade.

  • Wet corrosion resistance properties in medium severe conditions
  • Chemical industry (industrial phosphoric acid; Concentration < 30% P205 without abrasion; θ <60°C – 140°F)
  • Food and beverage processing industry
  • Water treatment
  • Rail and road containers and tanks
  • Household appliances
  • Building decoration

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Address:Longwan District, Wenzhou, Zhejiang Province, China.

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