STAINLESS STEEL DUPLEX ROPE

Stainless Steel

DUPLEX ROPE

Characteristics of the KOS DUPLEX ROPE

DUPLEX Standard steel chemical requirements

• High Breaking Force (The breaking force shall be specified as a minimum breaking force only) - KOS Duplex Wire Rope meets most of the international standards and customized specificationsforindividualcustomers. -Breakingforcehigherthaninternationalstandardscanbeprovideduponrequest (Approx 20% higher than AISI 304 grade)

•Highresistanceagainstpittingandcrevicecorrosion -PittingresistanceofKOSDuplexWireRopeisapprox.30%higherthanAISI316grade. -BettercrevicecorrosionresistancethanthatofAusteniticgradeinsimilarworkingcondition. (Nocrevicecorrosionupto1,000ppmofChlorine).

• High resistance against stress corrosoin cracking -ComparedwithAusteniticgrade,KOSDuplexRopewithstandsmorethan100°Celevated temperatureinsimilarworkingcondition. •Extrabrightandcleansurface.

•Chemicalcomposition(Wt.Pct.) (Unit:wt%)

Spec. Grade Range C Si Mn P S Cr Ni Mo Mo Remark

EN 10088-3:2005

X2CrNiMoN22-5-31.4462

Min 21.0 4.50 2.50 0.10

2205

Max 0.030 1.00 2.00 0.035 0.015 23.0 6.50 3.50 0.22

ASTMA240/A240M S31803

Min 21.0 4.50 2.50 0.08

Max 0.030 1.00 2.00 0.030 0.020 23.0 6.50 3.50 0.20

STAINLESS STEEL DUPLEX ROPE

Grade Cr(%) Mo(%) N(%) PRE2205 21.0-23.0 2.5-3.5 0.10-0.22 35

904L 19.0-23.0 4.0-5.0 0.10 34

316N 16.0-18.0 2.0-3.0 0.10-0.16 26

316 16.0-18.0 2.0-3.0 0.10 24

302/304 17.5-19.5 0 8.0-10.5 19

•PRE(PittingResistanceEquivalent)PRE=%Cr+(3.3x%Mo)+(16x%N)

Wei

ght L

oss(

%)

Wei

ght L

oss(

%)

Time (hour)

Weight loss ratio (%): Per grade and hour

Weight loss ratio (%): Per grade and hour

•Test specification: ASTM G48-A, Ferric Chloride Pitting Test.• Ferric chloride test solution composition: 100g FeCI36H20 + 900ml distilled water (6% FeCI3 by mass)

Corrosion resistance: 2205>>>2304>316>304

Time (hour)

3hrs

3hrs

0

0

100908070605040302010

100908070605040302010

8hrs

8hrs

21hrs

21hrs

304

304

316

316

2205

2205

Corrosion Resistance

STAINLESS STEEL DUPLEX ROPE

Tem

pera

ture

°C, °

FTe

mpe

ratu

re °C

)C

orro

sion

resi

stan

ce

• Resistance to stress corrosion crackingDuplex grades exhibit higher resistance to SCC than austenitic in similar conditions

•CreviceCorrosion

•SaltSprayTest(ASTMB118TEST)

0.0001 0.001 0.01CI-, weight%

CI-,ppm

Duplex 2205 with dissimilar grades

100 200 500 1000 2000 2000

0.1 1 100

0

0

300570

480

390

300

210

12032

SCC

NO SCC

250

100

80

60

40

20

600

500

400

300

200

528

7 12 23

570

480

390

300

210

120

3247100

200

150

100

50

AISI 304/304LAISI 316/216L

AISI 316L

2205

304316304+2205316+2205

SAF2304SAF2205

SAF2205

(Source: Sandvik)

• SCC resistance in oxygen-bearing (abt.8 ppm) neutral chloride solutions• Testing time 1000hrs• Applied stress equal to yield strength at testing temperature

Test Condition: ASTM B 117 TEST(Accelerated test with H202 15%)• Duplex 2205 shows excellent corrosive resistance when used alone• Be cautious for Galvanic Corrosion when you use it together with other grade of steel.

NEW SOUTH WALESUnit 2/6 Greenfield StreetBanksmeadow NSW 2019P.O. Box 208, Botany 1455Tel: +(61) 2 9666 5900Fax: +(61) 2 9666 5010 Email: sales@arcuswire.com

Rope GradeWire tensiles strength grades N/mm2

Grade RemarkMinimum Maximum

1770 1570 1960

2205DIN EN 12385-41960 1770 2160

2160 1960 21602300 2160 2500 KOS SPEC

DIA1X19 7X19

Rope Grade 1570

Rope Grade 1770

Rope Grade 1960

Rope Grade 2300

Rope Grade 1770

Rope Grade 1960

Rope Grade 2300

GRADE 2205 GRADE 2205

mm KN kgf KN kgf KN kgf KN kgf KN kgf KN kgf KN kgf1 0.8 84 0.9 95 1.0 105 1.2 123 0.6 65 0.7 72 0.8 842 3.3 336 3.7 379 4.1 420 4.8 493 2.5 259 2.8 287 3.3 3373 7.4 756 8.4 853 9.3 944 10.9 1,108 5.7 583 6.3 646 7.4 7584 13.2 1,345 14.9 1,516 16.5 1,679 19.3 1,970 10.2 1,037 11.3 1,148 13.2 1,3475 20.6 2,101 23.2 2,369 25.7 2,623 30.2 3,078 15.9 1,620 17.6 1,794 20.6 2,1056 29.7 3,026 33.5 3,411 37.0 3,777 43.5 4,433 22.9 2,333 25.3 2,583 29.7 3,0317 40.4 4,119 45.5 4,643 50.4 5,142 59.2 6,033 31.1 3,175 34.5 3,516 40.5 4,1268 52.8 5,379 59.5 6,065 65.9 6,716 77.3 7,880 40.7 4,147 45.0 4,592 52.8 5,3899 66.8 6,808 75.3 7,675 83.4 8,499 97.8 9,974 51.5 5,248 57.0 5,812 66.9 6,820

10 82.4 8,405 92.9 9,476 103 10,493 107.8 11,000 63.5 6,480 70.4 7,175 82.6 8,42011 99.7 10,170 112 11,466 125 12,697 - - 76.9 7,840 85.1 8,682 99.9 10,18812 119 12,103 134 13,645 148 15,110 - - 91.5 9,331 101 10,332 118.9 12,12513 139 14,205 157 16,014 174 17,733 - - 107.4 10,950 119 12,126 139.5 14,22914 162 16,474 182 18,573 202 20,566 - - 124.5 12,700 138 14,063 161.8 16,50315 185 18,912 209 21,321 232 23,609 - - 143.0 14,579 158 16,144 185.8 18,94516 211 21,517 238 24,258 263 26,862 - - 162.7 16,588 180 18,368 205.8 21,00017 238 24,291 269 27,385 - - - - 183.6 18,726 203 20,736 - -18 267 27,233 301 30,702 - - - - 205.9 20,994 228 23,247 - -19 298 30,343 335 34,208 - - - - 229.4 23,391 254 25,902 - -20 330 33,621 372 37,903 - - - - 254.2 25,918 281 28,701 - -21 363 37,067 410 41,789 - - - - 280.2 28,575 310 31,642 - -22 399 40,681 450 45,863 - - - - 307.5 31,361 341 34,728 - -

• Wire tensile strength grades for individual wire.

• Minimum breaking force

• Higher tensile strength available upon request

• Table above is based on DIN EN 12385-4 and applicable to other international specs.ROPE GRADE 2300 specification is a new and high breaking strength product developed by KOS

Rope Grade

Mechanical Properties

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