Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ

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CAN I MAKE STAINLESS (300/400) FLAT BLACK OR GRAY AT HOME?

PLEASE, WHAT D.I.Y. PROCESS CAN I USE TO MAKE 300 AND 400 SERIES STAINLESS FLAT BLACK OR GRAY?

DALE ORNDORFF
- GRAND ISLAND, New York

Do you need an oxidation/anodization process or might some sort of paint or dye paint do, Dale?

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey

Brown to black for SS:

13 gm Na2Cr2O7
1 lit H2SO4( 1,55 g/cm3)
temp. 18-25 C,5-10 min.

solution 2.(brown):

H2SO4(1,84 g/cm3).......50 ml/lit
Na2S2O3.................200 gm/lit
1 lit water,temp 30 °C

Goran Budija
- Cerovski vrh Croatia

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