Stainless Steel Boat Shaft Bar
Boat Shaft Bar, also known as Boat Shaft Quality (BSQ) Bar, is a precision-machined rod designed for use as a propeller shaft in marine vessels. These bars are made from high-strength Stainless steel alloys needed for the harsh marine environment and to transmit power from the engine to the propeller.
Stirlings is a Boat Shaft Bar specialist, supplying various Grades, long length shafts, finishes and conditions.
Grades available are Austenitic Grade 316L, Duplex 2205, Super Duplex 2507, Martensitic Precipitation Hardening 630, Aqua 17, 19, 22, and 22 High Strength.
Contact us for a personalised package suitable for your requirements.
| Grade | Typical Ultimate Tensile Strength UTS |
Yield Strength 0.2% Offset |
Elongation | Pitting Resistance PREN |
| 630 | 860 - 1100 MPa | 725 - 900 MPa | 16 - 21 % | 18 |
| 316 | 515 - 620 MPa | 205 - 360 MPa | 30 - 60 % | 24 |
| 2205 | 620 - 780 MPa | 448 - 520 MPa | 25 - 40 % | 35 |
| 2507 | 730 - 960 MPa | 530 - 670 MPa | 25 - 40 % | 43 |
| Aqua 22 HS | 795 - 1050 MPa | 515 - 860 MPa | 25 - 35 % | 38 |