Galvanised steel corrosion and finish compatibility
How galvanised steel corrodes: zinc life by exposure category, why powder peels off zinc, the duplex system that doubles life, and the edges that fail first.
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Topic hub · 38 guides
Materials and grades
Most sheet metal problems are material decisions made too late. This cluster covers grade selection, thickness and tolerance, formability and corrosion for the materials Ganesh cuts, forms, welds and coats: CRCA and hot-rolled steel, 304 and 316L stainless, 5052 and 6061 aluminium, brass and copper. Each guide names the standard, the property that matters and the failure it prevents.
Guides in this topic, page 3
Grade selection for CRCA, stainless, aluminium, brass and copper: formability, thickness, corrosion and what the mill certificate actually guarantees.
304 stainless corrosion and finish compatibility
How 304 stainless corrosion resistance behaves under powder coat, wet paint, galvanising or bare exposure, and the pretreatment each route actually needs.
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When 1050 aluminium is the wrong material for a part
Where 1050 aluminium fails as a bracket, thread, weld or wear part, the grade that replaces it, and the thickness arithmetic that removes its weight advantage.
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When CRCA is the wrong material for a part
CRCA alternatives for procurement: the six failure modes that rule it out, the substitute that fixes each, and the weight and stiffness numbers that decide.
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When hot-rolled mild steel is the wrong material for a part
Six failure modes that make hot-rolled steel the wrong choice, the thickness where CRCA takes over, and the weight and tonnage numbers behind each switch.
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1050 aluminium corrosion and finish compatibility
How 1050 aluminium behaves bare, anodised, powder coated and painted: why its purity resists chloride, where it still pits, and the finish limits to design to.
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Thickness tolerance and its effect on CRCA parts
CRCA thickness tolerance and its effect on bends, weight, fit and weld: the mill band, the flat-pattern arithmetic and the inspection that catches a coil shift.
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430 stainless corrosion and finish compatibility
430 stainless corrosion and finish compatibility: PREN 17 limits, why powder bonds better than on 316L, why galvanising is impossible, and the masking rules.
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Brass for sheet metal parts: grade, thickness, formability
Grade, temper and thickness selection for brass sheet: copper content, bend radii, bend allowance, laser cutting and the limits that stop a drawing.
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