Sandvik SAF 3207 HD™
Sandvik SAF 3207 HD™ introduction
Sandvik SAF 3207 HD™ is a hyper-duplex (austenitic-ferritic) stainless steel for service in highly corrosive conditions where also high mechanical strength is necessary. This makes the grade ideal for applications such as deepwater umbilicals. Sandvik SAF 3207 HD™ is characterized by:
Excellent resistance to pitting and crevice corrosion
Excellent resistance to stress corrosion cracking (SCC) in hydrogen sulphide (H₂S) and chloride containing environments
High resistance to general corrosion in acidic and caustic environments
Excellent resistance to erosion corrosion
Excellent corrosion fatigue properties
Exceptionally high mechanical strength
Exceptionally high fatigue strength
Physical properties that offer design advantages
Good weldability
More technical information and charts that are relevant to the materials corrosion, mechanical and physical performance are displayed in the figures on the right side of the material page.
Datasheet URL:
Sandvik SAF 3207 HD™
Datasheet updated 2019-12-20 10:08 (supersedes all previous editions)
Equivalent material: UNS S33207
Sandvik SAF 3207 HD™ general
| Property |
Temperature |
Value |
Comment |
| Density |
23.0 °C |
Density of 7.7 g/cm³ |
- |
| Recycled Content |
- |
Recycled Content of 82.1 % |
Average recycled content |
Sandvik SAF 3207 HD™ thermal
| Property |
Temperature |
Value |
Comment |
| Coefficient of thermal expansion |
100.0 °C |
Coefficient of thermal expansion of 1.35E-5 1/K |
for 30°C to the mentioned temperature |
| - |
200.0 °C |
Coefficient of thermal expansion of 1.35E-5 1/K |
for 30°C to the mentioned temperature |
| - |
300.0 °C |
Coefficient of thermal expansion of 1.4E-5 1/K |
for 30°C to the mentioned temperature |
| - |
400.0 °C |
Coefficient of thermal expansion of 1.45E-5 1/K |
for 30°C to the mentioned temperature |
| Specific heat capacity |
20.0 °C |
Specific heat capacity of 480 J/(kg·K) |
- |
| - |
100.0 °C |
Specific heat capacity of 510 J/(kg·K) |
- |
| - |
200.0 °C |
Specific heat capacity of 540 J/(kg·K) |
- |
| - |
300.0 °C |
Specific heat capacity of 570 J/(kg·K) |
- |
| - |
400.0 °C |
Specific heat capacity of 590 J/(kg·K) |
- |
| Thermal conductivity |
20.0 °C |
Thermal conductivity of 13 W/(m·K) |
- |
| - |
100.0 °C |
Thermal conductivity of 15 W/(m·K) |
- |
| - |
200.0 °C |
Thermal conductivity of 16 W/(m·K) |
- |
| - |
300.0 °C |
Thermal conductivity of 18 W/(m·K) |
- |
| - |
400.0 °C |
Thermal conductivity of 20 W/(m·K) |
- |
Sandvik SAF 3207 HD™ chemical
| Property |
Value |
Comment |
| Carbon |
Carbon of 0.03 % |
max. |
| Chromium |
Chromium of 32 % |
- |
| Iron |
- |
| Manganese |
Manganese of 1.5 % |
max. |
| Molybdenum |
Molybdenum of 3.5 % |
- |
| Nickel |
Nickel of 7 % |
- |
| Nitrogen |
Nitrogen of 0.5 % |
- |
| Phosphorus |
Phosphorus of 0.04 % |
max. |
| Silicon |
Silicon of 0.8 % |
max. |
| Sulfur |
Sulfur of 0.01 % |
max. |
Sandvik SAF 3207 HD™ electrical
| Property |
Temperature |
Value |
| Electrical resistivity |
23.0 °C |
Electrical resistivity of 8.7E-7 Ω·m |
Sandvik SAF 3207 HD™ mechanical
| Property |
Temperature |
Value |
Comment |
| Elastic modulus |
20.0 °C |
Elastic modulus of 200 GPa |
- |
| Elongation |
23.0 °C |
Elongation of 25 % |
min. |
| Elongation A2 |
23.0 °C |
Elongation A2 of 15 % |
min. |
| Hardness, Rockwell C |
23.0 °C |
Hardness, Rockwell C of 36 [-] |
max. |
| Tensile strength |
20.0 °C |
Tensile strength of 850 - 950 MPa |
depending on the wall thickness |
| - |
50.0 °C |
Tensile strength of 923 MPa |
depending on the wall thickness |
| - |
100.0 °C |
Tensile strength of 850 MPa |
depending on the wall thickness |
| - |
150.0 °C |
Tensile strength of 811 MPa |
depending on the wall thickness |
| - |
200.0 °C |
Tensile strength of 784 MPa |
depending on the wall thickness |
| - |
250.0 °C |
Tensile strength of 785 MPa |
depending on the wall thickness |
| - |
300.0 °C |
Tensile strength of 791 MPa |
depending on the wall thickness |
| Yield strength Rp0.2 |
20.0 °C |
Yield strength Rp0.2 of 700 - 770 MPa |
min. depending on the wall thickness |
| - |
100.0 °C |
Yield strength Rp0.2 of 657 MPa |
min. depending on the wall thickness |
| - |
150.0 °C |
Yield strength Rp0.2 of 609 MPa |
min. depending on the wall thickness |
| - |
200.0 °C |
Yield strength Rp0.2 of 585 MPa |
min. depending on the wall thickness |
| - |
250.0 °C |
Yield strength Rp0.2 of 582 MPa |
min. depending on the wall thickness |
| - |
300.0 °C |
Yield strength Rp0.2 of 572 MPa |
min. depending on the wall thickness |
Sandvik SAF 3207 HD™ application
| Property |
- |
- |
| Application areas |
| Corrosion properties |
| Heat Treatment |
| Machining |
| Other |
| Welding |
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