The 6Mo super austenitic steel combines moderate tensile strength and high ductility with excellent corrosion resistance in seawater and variety of industrial environment. Typically the alloy has PREN of 42 – 44, which ensure that the resistance to pitting corrosion is high and it also has a hight resistance to crevice corrosion.
APPLICATIONS
Typical applications for the 6Mo alloy:
- Pumps, valves, chokes, pipework/flanges and manifolds in oil and gas industry.
- High resistance to general corrosion.
Heat Treatment
Solution annealing at min 1150°C followed by water quenching.
Weldability
Very good.
CHEMICAL COMPOSITION
Weight % | C | SI | MN | S | P | CR | NI | MO | N | CU |
MIN. | 19,50 | 17,50 | 6,00 | 0,18 | 0,50 | |||||
MAX | 0,020 | 0,80 | 1,00 | 0,010 | 0,030 | 20,50 | 18,50 | 6,50 | 0,22 | 1,00 |
PREN= (Cr% + 3.3Mo% + 16N%) ≥ 40
Product Standards: EN 10272, EN 10088, ASTM A276, ASTM A240, ASTM A479, ASTM A182–11A
(Chemical composition and mechanical properties only)
Approvals: NACE MR0175, NORSOK M650, NORSOK M630 – MDS R11/ R13/ R14/ R15/ R17/ R18
Mechanical Properties
Yield strength RP0.2, MPA |
Tensile strength RM, MPA |
Elongation [%] |
Hardness [HB] |
Impact, Charpy-V, -46ºC [J] |
Pre | |
ALL PRODUCTS | ≥ 300 | 650 – 850 | ≥ 35 | ≤ 260 | ≥ 45 | ≥ 40 |
ROUND BAR STOCK
DIA | KG/M |
10 mm | 0.7 |
12 mm | 1. |
16 mm | 1.7 |
20 mm | 2.6 |
25 mm | 4. |
30 mm | 5.8 |
32 mm | 6.6 |
35 mm | 7.9 |
40 mm | 10.3 |
50 mm | 16. |
60 mm | 23. |
65 mm | 27. |
70 mm | 31.2 |
75 mm | 36.1 |
80 mm | 41.2 |
90 mm | 51.9 |
100 mm | 64.1 |
110 mm | 76.1 |
115 mm | 85.9 |
DIA | KG/M |
120 mm | 92.3 |
130 mm | 108.1 |
140 mm | 125.4 |
150 mm | 144 |
160 mm | 161 |
170 mm | 186 |
180 mm | 208 |
200 mm | 256 |
210 mm | 286 |
220 mm | 308 |
230 mm | 343 |
250 mm | 393 |
270 mm | 467 |
280 mm | 503 |
300 mm | 577 |
325 mm | 687 |
350 mm | 796 |
380 mm | 939 |
400 mm | 1028 |
PLATE STOCK
MEASUREMENTS | KG/PLATE |
1 x 1250 x 2500 mm | 25 |
1,5 x 1500 x 3000 mm | 54 |
2 x 1500 x 3000 mm | 72 |
3 x 1500 x 3000 mm | 108 |
3 x 1500 x 6000 mm | 216 |
3 x 2000 x 6000 mm | 288 |
4 x 1500 x 3000 mm | 144 |
4 x 1500 x 6000 mm | 288 |
4 x 2000 x 6000 mm | 384 |
5 x 1500 x 3000 mm | 180 |
5 x 1500 x 6000 mm | 360 |
5 x 2000 x 6000 mm | 480 |
6 x 1500 x 3000 mm | 216 |
6 x 1500 x 6000 mm | 432 |
6 x 2000 x 6000 mm | 576 |
8 x 1500 x 3000 mm | 297 |
8 x 1500 x 6000 mm | 594 |
8 x 2000 x 6000 mm | 791 |
10 x 1500 x 3000 mm | 371 |
10 x 1500 x 6000 mm | 742 |
10 x 2000 x 6000 mm | 989 |
MEASUREMENTS | KG/PLATE |
12 x 1500 x 3000 mm | 445 |
12 x 1500 x 6000 mm | 890 |
12 x 2000 x 6000 mm | 1187 |
15 x 1500 x 3000 mm | 557 |
15 x 1500 x 6000 mm | 1113 |
15 x 2000 x 6000 mm | 1484 |
20 x 1500 x 3000 mm | 742 |
20 x 1500 x 6000 mm | 1484 |
20 x 2000 x 6000 mm | 1978 |
25 x 1500 x 3000 mm | 927 |
25 x 1500 x 6000 mm | 1854 |
25 x 2000 x 6000 mm | 2472 |
30 x 1500 x 3000 mm | 1113 |
30 x 1500 x 6000 mm | 2225 |
30 x 2000 x 6000 mm | 2967 |
40 x 1500 x 3000 mm | 1484 |
40 x 1500 x 6000 mm | 2967 |
40 x 2000 x 6000 mm | 3956 |
50 x 1500 x 3000 mm | 1854 |
50 x 1500 x 6000 mm | 3708 |
50 x 2000 x 6000 mm | 4944 |
COIL STOCK
1300 MM | 1500 MM | 2000 MM |
0,5 MM | 1,5 MM | 3 MM |
0,6 MM | 2 MM | 4 MM |
0,7 MM | 3 MM | 5 MM |
0,8 MM | 4 MM | 6 MM |
1 MM | 5 MM | |
6 MM |
PIPE STOCK
DIMENSIONS | SCH | KG/M |
---|---|---|
21,3 X 2,77 | 1/2″ sch 40s | 1,30 |
26,7 X 2,87 | 3/4″ sch 40s | 1,70 |
33,4 x 2,77 | 1″ sch 10s | 2,10 |
33,4 x 3,38 | 1” sch 40s | 2,50 |
42,2 x 2,77 | 1 1/4” sch10s | 2,70 |
48,3 x 2,77 | 1 1/2” sch 10s | 3,20 |
48,3 x 3,68 | 1 1/2” sch 40s | 4,10 |
60,3 x 2,77 | 2” sch 10s | 4,00 |
60,3 x 3,91 | 2” sch 40s | 5,50 |
73 x 3,05 | 2 1/2” sch 10s | 5,30 |
88,9 x 3,05 | 3” sch 10s | 6,50 |
88,9 x 5,49 | 3” sch 40s | 11,30 |
114,3 x 3,05 | 4” sch 10s | 8,40 |
114,3 x 6,02 | 4” sch 40s | 16,10 |
168,3 x 3,40 | 6” sch 10s | 13,80 |
168,3 x 7,11 | 6” sch 40s | 28,30 |
219,1 x 3,76 | 8” sch 10s | 20,00 |
273 x 4,19 | 10” sch 10s | 27,80 |
323,8 x 4,57 | 12” sch 10s | 36,00 |
355,6 x 6,35 | 14” sch 20 | 54,70 |