DX51D Z100 Galvanized Steel Coil and Sheet
We supply DX51D+Z100 galvanized steel in coil and sheet, 0.09 to 3.0 mm thick in coil, and from 0.25 mm in sheet. Z100 puts 100 g/m² of zinc on the strip, both sides combined. It is a cost-saving coat for painted and indoor parts.
Coating weight checked on every order by triple-spot test; result printed on the certificate
Full designation on every tag, e.g. DX51D+Z100-M-B-O
Zero or minimized spangle and paint-ready treatment for PPGI lines
Same coil spec repeated order after order from our own galvanizing line in Wuxi
Why Order DX51D Z100 From Us
01
Advice on the Coat, Not Just the Grade
If Z100 is too light for your climate, we will say so. If Z80 is enough, we will say that too.
02
Paint Lines Supported
For coil coaters, we match spangle, surface quality and passivation to your primer system. Our own color coating line runs on DX51D Z100 base too.
03
Steady Repeat Supply
Your monthly Z100 coils come from our own continuous hot-dip line in Wuxi, 20,000 tons a month. Surface and coat stay consistent across orders.
04
8–12 Working Days Lead Time
DX51D+Z100 ships in 8–12 working days, and faster for sizes in stock.
What Z100 Means on DX51D Steel
In DX51D+Z100, DX51D is the steel grade and Z100 is the zinc coat. “Z” means pure zinc. “100” means at least 100 g/m², measured over both sides together. That is about 7 µm of zinc per side.
Z100 sits at the light end of everyday coats. It gives good protection indoors and under paint. It costs less than Z180 or Z275, because zinc is a large part of coil price. For painted panels, cabinets and indoor framing, it is often all the zinc you need.
DX51D Z100 and Related Specs
DX51D Z100 Coil for PPGI
Base coil for color coating, 0.2 to 0.8 mm. Zero spangle, untreated or chrome-free surface.
DX51D Z100 Sheet for Cabinets and Appliances
Cut sheet for painted or powder-coated enclosures and appliance panels.
DX51D Z100 for Indoor Framing
Coil and slit coil for drywall studs, ceiling grid and cable trays used indoors.
DX51D Z150
A step up from Z100 for humid indoor areas or painted outdoor parts.
DX52D Z275
Drawing grade with a heavy coat, for pressed parts that face weather.
DX53D and DX54D Steel
Deep drawing grades, ordered with Z100 or other coats, for deep pressed parts.
Specifications
| Item | Range |
|---|---|
| Designation | DX51D+Z100 (EN 10346); also DX52D, DX53D, DX54D |
| Thickness | Coil 0.09–3.0 mm, sheet 0.25–3.0 mm |
| Width | 1000, 1219, 1250, 1500 mm (max. 1500 mm); slit coil from 15 mm |
| Coil ID / weight | 508 or 610 mm / recoiled to 4–5 ton small coils or 8–10 ton large coils (up to 12 tons) |
| Coat | Z100; Z40–Z275 also available, up to Z600 |
| Spangle | N (normal), M (minimized), zero |
| Surface quality | A, B, C |
| Treatment | C (passivated), O (oiled), CO, U (untreated) |
| Form | Coil, slit coil, sheet |
Is Z100 Enough? Choosing the Coat for DX51D
Most buyers choose the grade carefully, then copy the coat from an old order. Yet the coat often decides the price and the service life more than the grade.
Where Z100 Works Well
Z100 is a good fit when the steel is painted or stays indoors. Color-coated roofing is a common case. The paint carries most of the weather load, and zinc protects cut edges and scratches. Many PPGI lines use DX51D Z100 base for that reason.
It also suits appliances, electrical cabinets and indoor framing. In a dry building, a light zinc coat lasts for decades.
Where Z100 Falls Short
Bare outdoor use is the main limit. Zinc wears away at a slow but steady rate outdoors. A thin coat simply runs out sooner. Coastal air, farm buildings and industrial sites wear zinc faster still.
For bare roofing, fences and outdoor framing, choose Z180 to Z275. A DX52D Z275 or DX51D+Z275 order costs more, but saves a failed job.
Z100 vs Z150 for Painted Outdoor Parts
For painted panels in a mild climate, Z100 is usually fine. In humid or coastal regions, Z150 gives extra edge protection. The price step from Z100 to DX51D Z150 is small compared to a warranty claim. If your customer offers a long paint warranty, check its minimum zinc coat.
Grade and Coat Are Two Separate Choices
DX51D handles bends and roll forming. For deeper pressing, choose DX53D steel or DX54D steel, with the same Z100 coat. The grade decides forming. The coat decides corrosion. How to pick the grade is covered on our DX51D Steel page.
Read the Coat Number Correctly
Z100 is the total of both sides. It is not 100 g/m² per side. Some buyers compare Z100 with a US G-class and expect the same zinc. G30, for example, is about Z90. Ask for the coat in g/m² on the certificate, so both sides read the same number.
How Coat Affects Price
Zinc is priced separately from steel on world markets. When zinc rises, the gap between Z100 and Z275 widens. A lighter coat, where it is enough, is one of the easiest ways to cut coil cost without cutting quality.
Frequently Asked Questions
What does DX51D Z100 mean?
DX51D is an EN 10346 steel grade for cold forming. Z100 is a pure zinc coat of at least 100 g/m², both sides combined. Together they describe a light-coated galvanized steel for painted and indoor use.
Is DX51D Z100 galvanized steel suitable for roofing?
Yes, when it is color-coated. Many PPGI roofing sheets use Z100 base. For bare galvanized roofing, Z100 is too light. Choose Z180 or Z275 instead.
What is the difference between DX51D Z100 and DX51D Z275?
Only the zinc coat. Z275 carries 2.75 times the zinc of Z100. It lasts much longer outdoors but costs more. The steel grade and forming behavior are the same.
How thick is the zinc on Z100?
About 7 µm per side, or 14 µm in total. Thickness varies slightly across the width. The certificate gives the tested coat in g/m².
Can I order DX51D Z100 as slit coil?
Yes. We slit DX51D Z100 coil on our own slitting line, from 15 mm wide, for studs, trays and tube mills. Send each width, the number of cuts per master coil and your unwinding direction.
Why do DX51D Z100 prices change so often?
The price follows hot-rolled coil and zinc markets, which move weekly. Thickness, width and order size also matter. Send your full designation and quantity for a current quote.
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