“NC” Super Alloy Material Chemical Compatibility Chart

The chart below provides an alphabetical list of chemicals along with our best general recommendations regarding their compatibility with our “NC” Super Alloy Tweezers

“NC” – Aqueous Corrosion Resistance
Media Concentration, % by Weight Test Temperature Average Corrosion Rate Per Year, mils*
ºF ºC
Acetic Acid 99 Boiling Boiling <1
Ferric Chloride 10 Boiling Boiling 7325
Formic Acid 88 Boiling Boiling 9
Hydrochloric Acid 1 Boiling Boiling 1
1.5 Boiling Boiling 353
2 194 90 Nil
2 Boiling Boiling 557
2.5 194 90 72
2.5 Boiling Boiling 605
10 Boiling Boiling 642
Hydrochloric Acid +42 g/l Fe2 (SO4)3 1 200 93 238
5 150 66 2
Hydrochloric Acid +2% HF 5 158 70 123
Hydrofluoric Acid 2 158 70 20
5 158 70 16
P2O5 (Commercial Grade) 39 185 85 1
44 240 116 23
52 240 116 12
P2O5 +2000 ppm Cl 38 185 85 2
Nitric Acid 10 Boiling Boiling <1
65 Boiling Boiling 21
Nitric Acid +6% HF 5 140 16 73
Nitric Acid +25% H2SO4 +4%NaCl 5 Boiling Boiling 713
Nitric Acid +1% HCI 5 Boiling Boiling 1
Nitric Acid +2.5% HCI 5 Boiling Boiling <1
Nitric Acid +15.8$ HCI 8.8 126 52 >10,000
Sulfuric Acid 10 Boiling Boiling 37
20 150 66 <1
20 174 79 <1
20 Boiling Boiling 91
30 150 66 <1
30 174 79 <1
30 Boiling Boiling 227
40 100 38 <1
40 150 66 1
40 174 79 35
50 100 38 1
50 150 66 25
50 174 79 58
60 100 38 <1
70 100 38 <1
80 100 38 <1
Sulfuric Acid +0.1% HCI 5 Boiling Boiling 151
Sulfuric Acid +0.5% HCI 5 Boiling Boiling 434
Sulfuric Acid +1% HCI 10 158 70 121
10 194 90 326
10 Boiling Boiling 869
Sulfuric Acid +2% HF 10 Boiling Boiling 55
Sulfuric Acid +200 ppm Cl- 25 158 70 110
25 Boiling Boiling 325
Sulfuric Acid +1.2% HCI +1% FeCl3 +1%CuCl2 11 Boiling Boiling 1815
Sulfuric Acid +1.2% HCI +1% FeCl3 +1% CuCl2 (ASTM G28B) 23 Boiling Boiling 2721
Sulfuric Acid +42 g/l
Fe2 (SO4)3 (ASTM G28B)		 50 Boiling Boiling 23