FINISH AND MATERIAL OPTIONS
IRONSMITH cast products; tree grates, trench grates, drain grates and bollards, are available in:
Cast gray iron
Long a standard for gratings and bollards, gray iron offers the best balance of strength, durability and low cost. 100% post consumer recycled metal.
Cast ductile iron
Ductile iron is more malleable and less brittle than gray iron allowing for a greater strength to weight ratio. Best when higher strength and lower weight is needed. High percentage of post consumer metal but may include pre-consumer recycled metal still meeting L.E.E.D. standard for recycled content.
From 100% post consumer recycled metal. Light weight (1/3 cast iron) yet still strong, does not rust. Unique look when left unfinished.
Cast Bronze/Brass alloys
Standard material used is alloy C854 yellow brass for castings and C385 Architectural bronze for frame angles. Yellow brass contains app. 67% Copper, 29% Zinc, 3% Lead, and 1% Tin. Architectural Bronze contains app. 55 -60% copper,40% zinc, 2 – 3.8% lead . Due to their lead content C854 and C385 alloys may not be suitable for systems to provide water for human consumption. IRONSMITH copper alloy products are not ANSI/NSF 61 tested. Please check your local codes.
Click here for a discussion of bronze / brass
Fabricated Steel Products
Frames, tree guards, paver suspension,
from ASTM A36 carbon steel
All of our cast metal products look great and wear very well without any finish. But for those cases where a different color option is required we can finish any product to your specification.
All cast iron products have an as cast surface. This surface shows a light sand texture. Cast aluminum and copper alloy products have a 36 grit random orbital ground surface. This surface reflects light from multiple directions. It is not a linear brushed finish.
Click here for a discussion of natural aging
Black dip is an asphalt coating used only on cast iron.
Enamel Paint can be color matched to your specification. One coat primer one enamel color.
Polyurethane paint can be color matched to your specification. One coat special primer one polyurethane color top coat.
SHARKGRIP® may be added to enamel or polyurethane paint to improve slip resistance.
Powder coat can be supplied from any powder manufacturer’s standard colors. Powder coat process includes; sand balst , multistage wash and rinse, epoxy primer, exterior rated polyester topcoat. We suggest Cardinal Powder coat. IRONSMITH standard black is Cardinal T241-BK59 Black texture semi gloss TGIC polyester.
We also provide Tiger Drylac RAL colors.
For premium finishes we offer zinc galvanizing in both hot dip and hot spray methods for steel and iron products.
A non toxic easily field applied product to turn rusty grates dark instantly.
IRONSMITH discourages the use of this finish method. Click here for a full discussion.
We can provide Birchwood® Technologies M38 and M24 finishes.