TDI Material Chemical Compatibility Chart

"NC" Super Alloy Material Chemical Compatibility Chart

"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

*To convert mils per year (mpy) to mm per year, divide by 40.