|
Grade T309
Type 309 is an austenitic chrome-nickel steel with high heat resisting qualities. It is essentially non-magnetic, but becomes slightly magnetic when cold worked.
TYPICAL APPLICATIONS
Annealing boxes, air heaters, boiler baffles, heat exchangers, oil burner parts.
|
TYPICAL ANALYSIS |
309 |
|
Chrome |
22.00-24.00 |
|
Nickel |
12.00-15.00 |
|
Carbon |
.20 MAX. |
|
Manganese |
2.00 MAX. |
|
Silicon |
1.00 MAX. |
|
Molybdenum |
|
|
Other |
|
|
MECHANICAL PROPERTIES (ANNEALED)
BRINELL HARDNESS |
200 |
|
TENSILE-KSI |
95 |
|
YIELD-KSI |
40 |
|
ELONGATION IN 2-% |
45 |
|
RED. IN AREA-% MIN |
65 |
|
WELDING
CHARACTERISTICS |
Good tough welds |
|
MACHINING
COMPARED TO B1112
SCREW STOCK |
45% |
|
SPECIFICATIONS
AISI |
(PLATE)
309 |
|
ASTM |
A240 |
|
AMS |
5523 |
|
