Lagostina Martellata vs All-Clad D3: Tri-Ply Compared

Lagostina Martellata and All-Clad D3 are both sold as tri-ply cookware at Capital Cookware, but they are not built the same way. Martellata puts a hammered copper exterior over an aluminum core and a stainless cooking surface. D3 bonds stainless, aluminum and magnetic stainless into a fully clad pan with a stainless exterior. This guide compares what the listings actually say, so you can choose on construction—not on the word "tri-ply" alone.

How each pan is built

The important difference is the outside layer. Martellata's copper exterior is there for heat and appearance; copper itself is not magnetic, so you should not assume induction compatibility unless a specific listing says so. D3's outer stainless layer is magnetic, and Capital's D3 listings describe the line as induction compatible. If you cook on induction, that alone often decides it.

Heat behavior in plain terms

Both designs put aluminum (and in Martellata's case, copper on the outside) next to the food via a stainless interior, so both spread heat far better than single-sheet stainless. D3 is a classic fully clad sandwich: heat moves through the aluminum core across the base and up the walls. Martellata's listing emphasizes a thick aluminum core plus a copper exterior for heat control and retention. In practice, expect both to simmer and brown more evenly than a cheap disc-bottom pot. For a deeper ply primer, see tri-ply vs 5-ply and D3 vs D5.

Sizes and what Capital carries

All-Clad D3 is a full open-stock line at Capital: fry pans, saucepans, sauté pans and more. Easy in-stock examples include the D3 10-inch fry pan and the D3 2-quart sauce pan with lid.

Martellata at Capital has been a short list (the listings describe a 2-quart saucepan and a 5-quart stockpot/casserole). When those pages are sold out, you cannot complete the purchase even though the product pages still explain the construction. Recheck Lagostina before you plan a Martellata buy.

Martellata vs All-Clad Copper Core: copper outside vs copper inside

Both lines have copper in them, but in different places. Martellata's copper is the outer layer, so you see it. All-Clad Copper Core puts copper in the center of a 5-ply bonded build, wrapped in aluminum and stainless, so the pan looks like stainless with a copper band. Capital's Copper Core listings, such as the Copper Core 4-quart sauce pan, rate it oven and broiler safe to 600°F and induction ready, because the outside is still magnetic stainless.

If copper is what draws you to Martellata for cooking reasons rather than looks, Copper Core is the All-Clad line built around it. It costs more than D3, so read is All-Clad Copper Core worth it? and the D3 vs D5 vs Copper Core comparison before you pay for it.

In-stock replacements for the two Martellata pieces

Capital's two Martellata listings are a 2-quart saucepan and a 5-quart stockpot/casserole. These in-stock pieces cover the same jobs (checked Oct 18, 2026):

Shop them here: the D3 2-quart sauce pan with lid, the Nera 3-quart sauce pan, the D5 Brushed 5.5-quart Dutch oven and the HA1 6-quart stock pot. For sizing, see what size saucepan do I need? and the stock pot size guide.

Caring for a copper exterior vs stainless

Both Martellata listings at Capital say dishwasher safe, and the 2-quart listing also says metal-utensil safe. The cooking surface is stainless, so food care is the same as any clad stainless pan: preheat, add fat, and deglaze stuck bits. The difference is the outside. Exposed copper darkens and changes color with heat and time; a copper cleaner brings back the shine if you want it, or you can let it age. A D3 exterior is plain stainless, so the stainless cleaning routine handles both the inside and outside.

Lagostina Nera vs Martellata

Do not confuse Martellata with Lagostina Nera. Nera is hard anodized aluminum with a nonstick interior and hammered stainless lids—the line Capital usually has in stock, including the Nera 12-piece set and open-stock fry pans and saucepans. Martellata is clad metal with a stainless interior and copper exterior. If you wanted Lagostina and need something you can buy today, Nera is the realistic choice; see nonstick vs hard anodized.

Which should you buy?

• Buy D3 if you use induction, want one system you can expand for years, or need a specific size now.
• Buy Martellata if you want the copper exterior look, do not need induction (unless a listing says otherwise), and Capital has your size in stock.
• Buy Nera if you wanted Lagostina for easy-release cooking rather than a clad stainless/copper pan.

For brand-level All-Clad value, see is All-Clad worth it?. For building a mixed kitchen, the stainless buying guide still applies: fully clad stainless for searing and sauces, nonstick only where it earns its keep.

Who this guide is for / who can skip it

• For you if you are comparing Lagostina Martellata to All-Clad D3 on construction and oven ratings.
• Skip if you already know you need induction clad stainless—go straight to D3—or you want nonstick, in which case compare HA1 and Nera instead.

Common mistakes

• Treating every "tri-ply" label as identical layer stacks.
• Assuming a copper exterior pan is induction ready without a magnetic layer or a clear listing claim.
• Buying Martellata from memory when the live Capital listing is sold out.

Key takeaways

• Martellata = stainless interior + aluminum core + hammered copper exterior (per Capital listings).
• D3 = stainless / aluminum / stainless, magnetic exterior, wide open stock.
• When Martellata is out of stock, D3 (clad) or Nera (nonstick Lagostina) are the practical Capital alternatives.

Looking at Lagostina's nonstick line instead? Lagostina Nera cookware covers the 12-piece set's contents, its 500°F oven rating, which pieces are listed for induction and how Nera compares with All-Clad HA1.

Verdict

All-Clad D3 is the safer default for most kitchens, especially on induction and for long-term open-stock expansion. Lagostina Martellata is a copper-exterior tri-ply alternative when you want that look and Capital has stock. Until Martellata sizes return, shop D3 for clad stainless and Nera for Lagostina nonstick.