Stainless Steel 316L

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

Stainless steel 316L is an austenitic microstructure grade, free of deleteriouscarbide precipitations in grain boundaries. The grade contains some residualferrite (3%) after solution annealing (1050-1150C - 1922-2102F) and waterquenching. Chemistry and heat treatments may be optimised in order to controlthe ferrite content.

Stainless steel 316L resists to wet atmosphere or room temperature solutionscontaining some chloride or uoride additions. The steel is not seawaterresistant. The alloy may be used in diluted sulphuric acids at low temperature( 330C - 626F) as well as in sour organic solutions.

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

Stainless Steel 316L 21 22 Stainless Steel 316L

EURONORM 1.4404 X2CrNiMo 17.12.2

AFNOR Z3 CND 17-11-02

DIN W1.4404

ASTM A 240 TP 316LUNS S31603

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

Standards

Chemical Analysis

Mechanical Properties

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

* Optimised heats with extra low ferrite.

Tensile properties after solution annealing heat treatment

C F

Minimum guaranteed values * Typical values (10mm plates)

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 51 580 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 56 150 22 180 29 430 63 30

500 932 100 15 128 19 360 52 135 19 165 24 410 60 30

Impact values

C -196* -196 +20 (C) 450 550 650 700 750 800 850

F -452* -320 68 (F) 842 1022 1202 1292 1382 1472 1562

KCV (J/cm)Minimum

75 125 187 Ageing H 2000 2000 2000 2000 500 500 500

KCV (J/cm)Typical

125 250 312 KCU J/cm 230 245 155 140 140 145 165

Physical Properties

Intervaltemper

C

Thermalexpansion

x10-6K-1

C F Resistivity

( cm)

Thermalconductivity

(W.m-1.K-1)

Specicheat

(J.kg-1.K-1)

Youngmodulus

E(GPa)

Shearmodulus

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 17.5 520 186 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

Stainless Steel 316L 23 24 Stainless Steel 316L

Magnetic permeability: 1.015-1.050 (skin).

Corrosion Resistance

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 EDIN 50914 RCCM

STRAUSS Intergranular No cracking after bending

ASTM G48 A PittingNot recommended(typical CPT 5)

ASTM G48 B ASTM G78 CreviceNot recommended(typical CCT 5)

(1) kind of corrosion mechanism investigated

* Using low ferrite grade.

Applications

Wet corrosion resistance properties in medium severe conditions

Chemical industry (industrial phosphoric acid; Concentration < 30% P205without abrasion; < 60C - 140F)

Food and beverage processing industry

Water treatment

Rail and road containers and tanks

Household appliances

Building decoration