1. Introduce
– Stainless steel developed for use in high temperature corrosion resistant applications
– Excellent oxidation resistance to temperatures up to 1093°C
– Often used at cryogenic temperatures and has good toughness at -232°C
– UNS S31000
* 310 stainless steel type : related to carbon content
: 310 series is a stainless steel characterized by excellent oxidation resistance up to a temperature range of 1093°C
: Carbon content : Higher carbon content improves creep strength, lower carbon content improves weldability
– 310S : Carbon content 0.08% Maximum
– 310 : Carbon content 0.25% Maximum
– 310H : Carbon content 0.04~0.10% Maximum
* UNS
- Abbreviation for the Unified Numbering System for Metals and Alloys
- Unified unique numbering system for metals and alloys
- A representative number compatible with metals and alloys defined in several material-related codes, including ASTM, AISI, ASME, AWS, etc.
* S : Heat and corrosion resistant (stainless) steel
2. Property
– High temperature corrosion resistance, strength and toughness at cryogenic temperatures, good oxidation resistance
| Element | Impact |
|---|---|
| Cr, Ni | Provides corrosion resistance, sulfidation resistance |
[310 Chemical Composition (%)]
| C | Mn | P | S |
|---|---|---|---|
| Max. 0.25 | Max. 2.00 | Max. 0.045 | Max. 0.030 |
| Si | Cr | Ni | |
|---|---|---|---|
| Max. 1.50 | 24.0~26.0 | 19.0~22.0 |
[310 Mechanical Properties]
| Tensile Strength (Mpa) | Yield Strength (Mpa) | Elongation (%) |
|---|---|---|
| Min. 515 | Min. 205 | 45 |
[310 Physical Properties]
| Density (g/㎤) | Melting Range (℃) | Specific Heat (0-100℃), J/kg*℃ |
|---|---|---|
| 7.89 | 1673~1723 | 490~530 |
3. Standard & Specification
– Specification : UNS S31000
| ASTM | A167, A480 |
| ASME | SA240 |
| AMS | 5521 |
4. Available Form
– Bar, Rod
– Plate, Sheet, Strip
– Coil, Wire
– Fittings
5. Application & Product
– Chemical, Oil & Coal, Power Generation
| Application | Product |
|---|---|
| Chemical | Heat exchangers, Heat treatment equipment |
| Oil & Coal | Tube hangers for petroleum refining and steam boilers, Coal gasifier internal components, Catalyst recovery systems, Recuperators, Catalytic converters |
| Power Generation | Coal gasifier internals, Pulverized coal burners |
(1) Heat exchangers / (2) Pulverized coal burners / (3) Catalytic converters
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