Sandvik SanRig 80 (Wire)
Datasheet updated 2013-02-18 14:23:37 (supersedes all previous editions)
Sandvik SanRig 80 is an austenitic stainless steel characterized by very high fatigue and tensile strength, combined with good corrosion resistance in seawater containing media. Sandvik SanRig 80 rig rod is developed specially for marine applications.
Standards
- UNS S31675
Chemical composition (nominal) %
| C | Si | Mn | P | S | Cr | Ni | Mo | N | Nb |
|---|---|---|---|---|---|---|---|---|---|
| max. | max. | max- | |||||||
| 0.035 | 0.5 | 4.0 | 0.020 | 0.015 | 20.5 | 10 | 2.4 | 0.4 | 0.3 |
Forms of supply
Sandvik SanRig 80 rig rod is supplied in the form of cold drawn and degreased wire, in coils.
| Diameter | Minimum tensile strength, Rm | Minimum breaking load | |||
|---|---|---|---|---|---|
| mm | in. | MPa | ksi | kg | lb |
| 4.4 | 0.173 | 1450 | 210 | 2 248 | 4 955 |
| 5.0 | 0.197 | 1450 | 210 | 2 903 | 6 399 |
| 5.7 | 0.224 | 1450 | 210 | 3 772 | 8 316 |
| 6.4 | 0.252 | 1450 | 210 | 4 756 | 10 484 |
| 7.1 | 0.280 | 1450 | 210 | 5 853 | 12 903 |
| 7.5 | 0.295 | 1450 | 210 | 6 531 | 14 398 |
| 8.4 | 0.331 | 1450 | 210 | 8 192 | 18 061 |
| 9.5 | 0.374 | 1450 | 210 | 10 478 | 23 101 |
| 11.1 | 0.437 | 1400 | 203 | 13 812 | 30 450 |
| 12.7 | 0.500 | 1400 | 203 | 18 081 | 39 861 |
| 14.3 | 0.563 | 1400 | 203 | 22 923 | 50 538 |
| 16.8 | 0.661 | 1400 | 203 | 31 639 | 69 753 |
| 17.9 | 0.705 | 1400 | 203 | 35 918 | 79 186 |
Rig rod is tested in the unstraightened form.
| Diameter | Tolerance | ||
|---|---|---|---|
| mm | in. | mm | in. |
| 4.4 - 5.7 | 0.173 - 0.224 | +/- 0.022 | +/- 0.0008 |
| 6.4 - 9.5 | 0.252 - 0.374 | +/- 0.028 | +/- 0.0011 |
| 11.1 - 14.3 | 0.437 - 0.563 | +/- 0.036 | +/- 0.0014 |
| 16.8 - 17.9 | 0.661 - 0.705 | +/- 0.074 | +/- 0.0029 |
Mechanical properties
Tensile strength
Sandvik SanRig 80 rig rod is tested and certified according to minimum breaking load specified in the dimensional table.
Proof strength
Proof strength Rp0.2 for Sandvik SanRig 80 rig rod is in the range of 80 - 85 % of the tensile strength. Sandvik SanRig 80 can resist high loads without permanent set of the rig.
Fatigue strength
After material has been subjected to load cycles, which individually do not exceed the breaking strength of the material, fatigue cracks can occur. This is normally referred to as metal fatigue. Owing to the high tensile strength of Sandvik SanRig 80 rig rod the fatigue strength has been improved leading to reduced risk of fatigue at terminations.
Physical properties
Density: 7.87 g/cm3 , 0.296 lb/in3
| Temperature range | Coefficient | ||
|---|---|---|---|
| oC | oF | /oC | /oF |
| 20–100 | 68–212 | 15 x 10-6 | 8 x 10-6 |
Modulus of elasticity: 195 000 MPa, 28 280 ksi
Corrosion resistance
In seawater and other high chloride containing media, Sandvik SanRig 80 rig rod has very good corrosion resistance. Tests have been carried out in 3% NaCl solution using an electrochemical cell with an applied potential of 300mV vs. SCE. The determined critical pitting temperature (CPT) of Sandvik SanRig 80 was approximately 50oC (122oF). Based on the results it can be concluded that the pitting corrosion resistance of Sandvik SanRig 80 rig rod is sufficient for the application and comparable to grade Nitronic* 50.
* Nitronic is a registered trademark owned by AK Steel Corporation, US
Disclaimer: Recommendations are for guidance only, and the suitability of a material for a specific application can be confirmed only when we know the actual service conditions. Continuous development may necessitate changes in technical data without notice. This datasheet is only valid for Sandvik materials.
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