“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*
Media	Concentration, % by Weight	ºF	ºC	Average Corrosion Rate Per Year, mils*
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
Hydrochloric Acid +42 g/l Fe₂ (SO₄)₃	5	150	66	2
Hydrochloric Acid +2% HF	5	158	70	123
Hydrofluoric Acid	2	158	70	20
Hydrofluoric Acid	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
Nitric Acid	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
Sulfuric Acid +200 ppm Cl-	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