ISO 9001 : 2000
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Black Oxide
  • Black oxide finish can be performed on steel, stainless steel, cast iron, copper and brass.
  • Black oxide finish produces:-
    > No dimensional change
    > No chipping
    > retains surface properties
    > absorb oil and wax
    > finish can be exposed to heat without fading
  • Work finished and tested to the following specifications in-house

" TRB/Andarn has capabilty to perform and certify finishining to the following specifications".

Base Metal Specification
  Mil-C-13924D Mil-Std-171D Mil-F
14072		 AMS 2485F Mil-STD-186D Other
Carbon/Cold rolled steel Class I 3.3.1.2     214   
Cast Iron  Class I  3.3.1.2     214   
Stainless steel Class 4 3.3.2.1
3.3.4.1 		        
Copper/
Brass/Bronze		   3.2 E311   213 Mil-F-495E
Salt Spray(class 4)/Oxalic Acid Test(Class 1 and 2 only) 96 Hours(Class 4 Only)     
Smut Test  Yes Yes Yes Yes Yes