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Address: NO.288,Youyi Road Xi Shan Dristrict , Wuxi, Jiangsu, China
Contact name:Gao Ben
TSING SHAN STEEL INDUSTRIAL LIMITED |
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DIN1.4835 stainless steel plate 253ma
UNS S30815 Austenitic Stainless Heat resistant Steel
The chemical composition of 253 ma is balanced, make the steel at
850 to 1100 temperature range has the most appropriate
comprehensive performance, high resistance to oxidation, the
oxidation of skin temperature as high as 1150 ;Extremely high
variant variable capacity creep and creep rupture strength;In most
of the gas medium has good resistance to high temperature corrosion
and scale brush resistant ability;Higher yield strength and tensile
strength at high temperature.Good formability and weldability, and
enough to machinability.
Besides element chromium and nickel alloy, 253 ma stainless steel
also contains a small amount of Rare Earth Metals, Rare Earth
Metals, REM), so as to significantly improve its oxidation
resistance.Nitrogen added to improve the creep properties and make
this be fully austenitic steel.In spite of chromium and nickel
content is relatively low, but this kind of stainless steel have
many cases with high alloyed steel and nickel base alloy high
temperature properties of the same.
| Material | DIN253ma | ||
| Chemical Composition | Mechanical Properties(In Quenched & Tempered State) | ||
| C | 0.05-0.10 | Tensile strength(MPA) | |
| Si | 1.40-2.00 | Yield strength (MPA) | |
| N | 0.14-0.20 | Elongation(δ5/%) | |
| Cr | 20.00-22.00 | Reduction in Area (ψ/%) | |
| Mo | Impact (J) | ||
| P | ≤0.035 |
Hardness |
|
| S | ≤0..030 | ||
| CE | 0.03-0.08 | ||
| Ni | 10.00-12.00 | ||
2.Product Application Areas:
Our products have been used in all kinds of areas, such as aviation,aerospace,navigation,nuclear energy,chemical industry,
electronic information,achine manufacture, petrochemical, automotive,instrument and meter, Communication ,transportation, and medical instruments, etc.
3.Similar steel grade & equivalent steel materials:
| USA | Japanese | Gemany | British | France | International | Chinese |
| ASTM&AISI&SAE | JIS | EN DIN | EN BS | EN NF | ISO | GB |
| 1.4835(253MA) | ------ | S30815 | ||||
These properties are specified for flat rolled product (plate, sheet and coil) as Grade S30815 in ASTM A240/A240M. Similar but not necessarily identical properties are specified for other products such as pipe and bar in their respective specifications.
Typical compositional ranges for grade 253MA stainless steels are given in table 1.
| C | Mn | Si | P | S | Cr | Ni | N | Ce | |
| min. | 0.05 | - | 1.10 | - | - | 20.0 | 10.0 | 0.14 | 0.03 |
| max. | 0.10 | 0.80 | 2.00 | 0.040 | 0.030 | 22.0 | 12.0 | 0.20 | 0.08 |
Typical mechanical properties for grade 253MA stainless steels are given in table 2.
| Tensile Str (MPa) min | Yield Str 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | |||
| 600 | 310 | 40 | 95 | 217 |
Typical physical properties for grade 253MA stainless steels are given in table 3.
| Density (kg/m3) | Elastic Modulus (GPa) | Mean Coefficient of Thermal Expansion (mm/m/°C) | Thermal Conductivity (W/m.K) | Specific Heat 0-100°C (J/kg.K) | Electrical Resistivity (nW.m) | |||
|---|---|---|---|---|---|---|---|---|
| 0-100°C | 0-600°C | 0-1000°C | at 20°C | at 1000°C | ||||
| 7800 | 200 | 17.0 | 18.5 | 19.5 | 15.0 | 29.0 | 500 | 850 |
Approximate grade comparisons for 253MA stainless steels are given in table 4.
| UNS No | Old British | Euronorm | Swedish SS | Japanese JIS | |||
| BS | En | No | Name | ||||
| S30815 | - | - | 1.4835 | X9CrNiSiNCe21-11-2 | 2368 | - | |
| These comparisons are approximate only. The list is intended as a comparison of functionally similar materials not as a schedule of contractual equivalents. If exact equivalents are needed original specifications must be consulted. | |||||||
Possible alternative grades to grade 253MA stainless steels are given in table 5.
| Grade | Why it might be chosen instead of 253MA |
| 310 | Carburising atmospheres require a higher nickel content |
| 304H | Lower cost alternative, provided the operating temperature is below about 800°C |
| Nickel Alloys | Carburising atmospheres or temperatures above the 1100 - 1150°C maximum of 253MA. |
