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in PDF FormatCONTROLLED EXPANSION ALLOYS
F15 ALLOY (KOVAR)
RODAR MIL-I-23011C CLASS 1
NICKEL IRON COBALT / GLASS & CERAMIC SEALING ALLOY
FOR HIGH INTEGRITY GLASS & CERAMIC TO METAL SEALS
TYPICAL NOMINAL CHEMISTRY
NICKEL (NI) |
29.0 |
MAGNESIUM (MG) |
0.10 |
MANGANESE (MN) |
0.50 |
SILICON (SI) |
0.20 |
CARBON (C) |
0.06 |
ALUMINUM (AL) |
0.10 |
COBALT (CO) |
17.0 |
ZIRCONIUM (ZR) |
0.10 |
TITANIUM (TI) |
0.10 |
PHOSPHORUS (P) |
0.025 |
SULFUR (S) |
0.025 |
IRON (FE) |
BALANCE |
TYPICAL TENSILE STRENGTH
ANNEALED |
85,000 MAX. |
¼ HARD |
90,000 to 115,000 |
½ HARD |
105,000 to 125,000 |
HARD |
120,000 MIN. |
TYPICAL HARDNESS, ROCKWELL B
ANNEALED |
85 MAX. |
¼ HARD |
90 to 93 |
½ HARD |
94 to 96 |
TYPICAL LINEAR COEFFICIENT OF THERMAL EXPANSION
(CM. PER CM. C x 10 – 6)
30 to 100 |
n/a |
30 to 200 |
5.5 |
30 to 300 |
5.1 |
30 to 350 |
N/A |
30 to 400 |
4.9 |
30 to 425 |
N/A |
30 to 450 |
5.3 |
30 to 500 |
6.2 |
30 to 550 |
N/A |
30 to 600 |
7.9 |
30 to 700 |
9.3 |
30 to 800 |
10.4 |
30 to 900 |
11.5 |
30 to 1000 |
N/A |