Material Compatibility


Brass, bronze, copper, lead and zinc will oxidize diesel and biodiesel fuels and create sediments. Lead solders and zinc linings should be avoided, as should copper pipes, brass regulators, and copper fittings. The fuel or the fittings will tend to change color and sediments may form, resulting in plugged fuel filters. Affected equipment should be replaced with stainless steel or aluminium. Acceptable storage tank materials include aluminium, steel, fluorinated polyethylene, fluorinated polypropylene and Teflon.

Table: Material Compatibility with Biodiesel Fuels (2001)

Material

BXX

Effect compared to diesel fuel

Teflon

B100

Little change

Nylon 6/6

B100

Little change

Nitril

B100

Hardness reduced 20 %, Swell increased 18 %

Viton A401-C

B100

Little change

Viton GFLT

B100

Little change

Fluorosilicon

B100

Little change in hardness, Swell increased 7 %

Polyurethane

B100

Little change in hardness, Swell increased 6 %

Polypropylene 

B100

Hardness reduced 10 %, Swell increased 8 - 15 %

Polyvinyl

B100

Much Worse

      --

B50

Worse

      --

B20

Comparable

Tygon

B100

Worse

 

 

 

 

National Renewable Energy Laboratory. NREL/TP-580-30004.