Written by admin on 04/20/2010 – 2:25 pm
310S(1.4845) is a highly alloyed austenitic stainless steel used for high-temperature applications. The high chromium and nickel contents give the steel excellent oxidation resistance as well as high strength at high temperatures. This grade is also very ductile, and has good weldability enabling its widespread usage in many applications.
SX 310S is the low carbon version of SX 310 and is suggested for applications where sensitisation, and subsequent corrosion by high temperature gases or condensates during shutdown may pose a problem.
SX 310 is manufactured in accordance with ASTM A 167 and SX 310S to ASTM A 240.
Typical Applications
SX 310/310S find wide application in all high-temperature environments where scaling and corrosion resistance, as well as high temperature strength and good creep resistance, are required.
| SX | C | Mn | P | S | Si | Cr | Ni |
| 310 | 0.25 max | 2.0 max | 0.045 max | 0.030 max | 1.5 max | 24.0 – 26.0 | 19.0 – 22.0 |
| 310S | 0.08 max | 2.0 max | 0.045 max | 0.030 max | 1.5 max | 24.0 – 26.0 | 19.0 – 22.0 |
Typical Properties in the Annealed Condition
The properties quoted in this publication are typical of mill production and unless indicated should not be regarded as guaranteed minimum values for specification purposes.
1. Mechanical Properties at Room Temperature
| SX 310 | SX 310S | |||
| Typical | Minimum | Typical | Minimum | |
| Tensile Strength, MPa | 625 | 515 | 575 | 515 |
| Yield Stress (0.2 % offset), MPa | 350 | 205 | 290 | 205 |
| Elongation (Percent in 50mm) | 50 | 40 | 50 | 40 |
| Hardness (Brinell) | 172 | - | 156 | - |
| Endurance (fatigue) limit, MPa | 260 | - | 260 | - |
2. Properties at Elevated Temperatures
The values quoted are those for SX 310.
Enquire for data on 310S .
Short Time Elevated Temperature Tensile Strength
| Temperature, oC | 550 | 650 | 750 | 850 | 950 | 1050 |
| Tensile Strength, MPa | 550 | 430 | 280 | 180 | 90 | 50 |
Creep data
Stress to develop a creep rate of 1% in the indicated time at the indicated temperature.
| Time | TemperatureoC | 550 | 600 | 650 | 700 | 750 | 800 |
| 10 000 h | Stress MPa | 110 | 90 | 70 | 40 | 30 | 15 |
| 100 000 h | Stress MPa | 90 | 75 | 50 | 30 | 20 | 10 |
Creep Rupture Stress
| Time | Temperature oC | 600 | 700 | 800 | 900 | 1000 |
| 1 000 h | Stress MPa | 190 | 110 | 50 | 35 | 15 |
| 10 000 h | Stress MPa | 170 | 70 | 35 | 20 | 10 |
| 100 000 h | Stress MPa | 110 | 55 | 25 | 10 | 2 |
Recommended Maximum Service Temperature
(Oxidising Conditions)
Continuous 1150oC
Intermittent 1035oC
Thermal Processing
1. Annealing. Heat from 1050 to 1150oC and water quench. This treatment ensures that all carbides are in
solution.
2. Hot working
Initial forging and pressing: 1150 – 1200oC
Finishing temperature: above 950oC
Note: Soaking times to ensure uniformity of temperature are up to 12 times that required for the same thickness of mild steel.
BAOFENG STEEL GORUP Co.,Ltd., as a competent manufacturer of quality 310S stainless steel seamless pipes and tubes，has been providing superior piping and tubing solutions for our numerous customers in various industries since 2003.
We strictly execute a number of specifications (eg. GB, ASTM, JIS, DIN )to produce 304/304L/304H, 316/316L, 321/H, 347H, 317/317L, 310S（2520）, Duplex Stainless Steel, etc.
As a competent manufacturer certified by Lloyds acc. to ISO9001-2000&PED/97/23/EC, we purchase quality billets from reputable and stabilized suppliers, such as Yongxing Special Steel.Co.Ltd., Bao Steel.Co.Ltd.
BAOFENG has very ambitious plan to expand our activities and further building good source to improve quality and reduce costing with fastest delivery. With the enterprise philosophy “Quality based, and Client Foremost”, and the support of our clients, we are approaching to be an international stainless steel manufaturing enterprise.
