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| Basic
Properties - Mechanical Properties |
| 0.2% Proof
Stress (N/mm2 )[ksi] minimum |
300 [43.5] |
| Ultimate Tensile Strength
(N/mm2) [ksi] minimum |
650 [94.2] |
| Elongation (%) minimum |
35 |
| Reduction of Area (%) minimum |
50 |
| Hardness (HBN) |
270max |
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|
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Low carbon version of 316 |
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Immune from grain boundary sensitisation |
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|
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Higher resistance to pitting corrosion and crevice corrosion in seawater than 304 stainless steel |
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Excellent ductility and impact strength at both ambient and sub-zero temperatures |
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Non-magnetic |
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Excellent forming and welding characteristics |
| Elements |
C |
Cr |
Fe |
Mo |
Mn |
N |
Ni |
P |
S |
Si |
| Minimum |
|
16.5 |
REMAINDER |
2.0 |
|
|
10.0 |
|
|
|
| Maximum |
0.035 |
18.5 |
|
2.5 |
2.0 |
0.11 |
13.0 |
0.045 |
0.030 |
1.0 |
| Density (Kg.m-3) |
8000 |
| Magnetic Permeability |
<1.05 |
| Young’s Modulus (N/mm2) |
193x 103 |
| Specific Heat 20°C (J.Kg-1.°K-1) |
500 |
| Electrical resistance, 20°C (µ.Ω.m) |
0.74 |
| Thermal conductivity, 20°C (W.m-1.°K-1) |
16.3 |
| Mean coefficient of thermal expansion, 20-100°C (°K-1) |
15.9 x 10-6 |
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Chemical Process Industry:
Organic and Fatty Acids, Chemical containers, Chemical transport, Heat Exchangers
Marine Industry and Shipbuilding:
Piping, Pumps, Valves, Fittings, Marine architechture
Oil and Gas Industry:
Piping, Valves, Pumps, Heat Exchangers
Mining Industry:
Woven screens
Food Industry
|
| Operation |
Cutting Speed m/min
(ft/min) |
Feed Rate
mm/rev
(in/rev) |
Depth of cut mm
(in) |
| Milling |
18(58)
|
0.13-0.25 mm/tooth 0.005-0.010in/tooth
|
0.2-3.0 (0.007-0.12)
|
| Drilling 6.4mm(1/4") dia |
250rpm |
0.075(0.003) |
|
| Drilling 12.7mm(1/2") dia |
250 rpm |
0.125(0.005) |
|
| Drilling 25.4mm(1") dia |
150 rpm |
0.28(0.011) |
|
| Turning - Roughing |
30-45(100-150)
|
0.40 – 0.50
(0.015-0.020)) |
2.5 (0.1) |
| Turning - Finishing |
50-60(165-200)
|
0.13-0.20 (0.005-0.008) |
0.5 (0.02) |
| Tooling |
Milling/Turning: Carbide (SANDVIK GC 235, SECO T25M)
Drilling: HSS, point angle 118°, chisel angle 120° |
| KEY Features of the Alloy |
Higher resistance to pitting corrosion and crevice corrosion in seawater than 304 stainless steel
Excellent ductility and impact strength at both ambient and sub-zero temperatures
Low magnetic permeability
|
| Alloy Comparisons |
S31603 |
S32205 |
N05500 |
S20910 |
FERRALIUM 255-SD50 |
| (0.2% Proof Strength, N/mm2) |
180 |
510 |
690 |
420 |
610 |
Corrosion Rate (mm.y-1)Seawater |
<0.1 |
<0.01 |
<0.18 |
<0.01 |
<0.01 |
Corrosion Rate (mm.y-1)10% sulphuric acid at 80°C |
>1 |
0.4 |
0.1 |
0.7 |
<0.15 |
Corrosion Rate (mm.y-1) Boiling 50% nitric acid |
<0.15 |
<0.15 |
0.15 |
0.18 |
<0.15 |
| Wear Properties related to Hardness (HRC) |
RC20 |
RC25 |
RC34 |
RC27 |
RC27 |
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Disclaimer
Data in this publication is provided solely for the purposes of distribution
of information. Langley Alloys cannot make guarantees with respect to subject
matter or accuracy of this information. Langley Alloys specifically disclaims
all guarantees, expressed, implied or otherwise, including without limitation,
all warranties of merchantability and fitness for a particular purpose. This
publication may include technical inaccuracies or typographical errors. If
errors are found, please make a notification via e-mail to: info@langleyalloys.com |
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