GB 0Cr18Ni10Ti Stainless Steel: Propriedades, Usos & Comparison Guide

If you’re looking for a stainless steel that handles heat and resists corrosion—especially after welding—GB 0Cr18Ni10Ti Stainless Steel é um dos principais candidatos. But what makes its titanium-stabilized design unique? And when should you choose it over common grades like SUS304? This guide breaks down its key features, Usos do mundo real, manufacturing steps, and how it stacks up to other materials. Até o final, you’ll have all the info to pick the right steel for your project.

1. Material Properties of GB 0Cr18Ni10Ti

O desempenho deGB 0Cr18Ni10Ti starts with its one-of-a-kindalloy composition eestrutura austenítica—paired with a critical feature: Estabilização de titânio. Let’s break down what makes it reliable:

Core Alloy Elements

• High chromium content (17.0-19.0%): Forms a protective oxide layer to fight rust and general corrosion.
• Alto teor de níquel (9.0-12.0%): Keeps the estrutura austenítica stable, boosting ductility and low-temperature toughness.
• Titanium stabilization (0.20-0.80% De): Binds with carbon in the alloy, preventing chromium carbides from forming during high-heat processes (like welding). This eliminates a major cause of Corrosão intergranular (a common flaw in non-stabilized steels).
• Teor de carbono (máx 0.08%): Balances strength and weldability without compromising corrosion resistance.

Key Mechanical Strength Data

Um exemplo real: A Shanghai boiler manufacturer usesGB 0Cr18Ni10Ti for heat exchanger tubes. The material’s high elongation (≥40%) lets tubes bend into tight shapes, enquantoEstabilização de titânio ensures they don’t corrode—even after welding and repeated exposure to 300°C hot water.

2. Applications of GB 0Cr18Ni10Ti

GB 0Cr18Ni10Ti shines in projects that involve heat, soldagem, or mild corrosive environments—where non-stabilized steels (Como SUS304) might fail. Aqui estão seus principais usos, with practical cases:

• Plantas de processamento químico: Ideal for pipes and reactors that handle mild acids (Por exemplo, acetic acid) and high temperatures. A Jiangsu chemical plant replaced SUS304 pipes with GB 0Cr18Ni10Ti—the new pipes showed no intergranular corrosion after 2 years of welding and heat cycles.
• Equipamento de processamento de alimentos: Used for baking ovens, sterilizers, and mixing tanks. A Guangdong bakery chose GB 0Cr18Ni10Ti for oven interiors—its heat resistance (até 800 ° C.) and easy-to-clean surface prevent food sticking and rust.
• Componentes aeroespaciais: Found in internal parts of aircraft (Por exemplo, linhas de combustível) that need to withstand temperature changes. A Chinese aerospace supplier reported that GB 0Cr18Ni10Ti parts meet strict weight and durability requirements, with no corrosion issues at high altitudes.
• Dispositivos médicos: Used for surgical instrument trays and autoclave chambers. A Wuhan hospital uses GB 0Cr18Ni10Ti trays—their resistance to high-temperature sterilization (121° c) and non-toxicity keep instruments clean and safe.
• Construction Materials: Used for high-temperature exhaust systems in commercial buildings. A Beijing mall installed GB 0Cr18Ni10Ti exhaust ducts—they’ve resisted corrosion from city pollution and heat for 5 anos.
• Other uses: Peças automotivas (exhaust manifolds for heavy-duty trucks), Electrical Appliances (oven heating elements), e Acessórios sanitários (high-temperature water faucets).

3. Manufacturing Processes for GB 0Cr18Ni10Ti

ProducingGB 0Cr18Ni10Ti requires precise steps to preserve itsEstabilização de titânio eestrutura austenítica. Aqui está como é feito:

1. Rolamento a quente: Heat the alloy to 1100-1200°C and roll it into thick plates or coils. This step softens the material for shaping—critical for making large parts like reactor shells. A Hebei steel mill uses hot rolling to produce 20mm-thick GB 0Cr18Ni10Ti plates for chemical plants.
2. Rolamento frio: Use room-temperature pressure to reduce thickness (Por exemplo, to 1mm for oven sheets). Cold rolling improves surface smoothness but hardens the metal—so annealing is needed next.
3. Recozimento: Heat to 950-1050°C, hold for 30 minutos, then cool rapidly. This restores ductility and ensures titanium fully binds with carbon (key for Estabilização de titânio). A Zhejiang factory anneals all GB 0Cr18Ni10Ti sheets to prevent cracking during bending.
4. Decapagem: Dip in nitric acid to remove oxide scales from rolling. Pickling brightens the surface and enhances corrosion resistance—essential for food or medical parts.
5. Drawing/Extrusion: Pull the alloy through dies to make wires or tubes. Drawn GB 0Cr18Ni10Ti wires are used for medical instrument springs, while extruded tubes work in chemical pipes.
6. Usinagem: Cut the material into final parts (Por exemplo, valve handles). Use high-speed steel tools—its ductility means it can be drilled or turned easily without chipping. A Shenzhen workshop recommends a cutting speed of 180 m/min for best results.
7. Forjamento: Hammer the alloy into complex shapes (Por exemplo, carcaças da bomba). Forging at 900-1000°C ensures parts keep their strength and Estabilização de titânio benefícios.

6. Standards and Specifications for GB 0Cr18Ni10Ti

Para garantir que você está recebendo alta qualidade, genuineGB 0Cr18Ni10Ti, always check compliance with these standards:

• GB/T. 20878: The core Chinese standard for stainless steels—it defines the alloy’s alloy composition (including titanium content), mechanical strength, e métodos de teste.
• ASTM A240: NÓS. standard—GB 0Cr18Ni10Ti is equivalent to ASTM 321, so it meets this standard’s requirements for flat products (pratos, folhas).
• EM 10088: European standard—equivalent grade is X6CrNiTi18-10, making it suitable for EU-based projects (Por exemplo, food processing plants in Germany).
• Padrões ISO: ISO 15510 aligns with GB 0Cr18Ni10Ti for pressure equipment (Por exemplo, Reatores químicos).

Always ask suppliers for:

• Certificação de material (Por exemplo, Mill Test Report) Para verificar o conteúdo de titânio (must be 0.20-0.80%) e propriedades mecânicas.
• Conformance Testing results (Por exemplo, GB/T. 4334.5 for intergranular corrosion resistance—critical for welded parts).
• Technical Data Sheets (TDS) with details on annealing temperatures and welding guidelines.

Controle de qualidade é chave: A Fujian supplier once sold fakeGB 0Cr18Ni10Ti with too little titanium—parts developed intergranular corrosion after welding. Always confirm compliance before buying.

7. Comparação: GB 0Cr18Ni10Ti vs. Outros materiais

Como aconteceGB 0Cr18Ni10Ti stack up against common stainless steels and alloys? Below is a side-by-side comparison focusing on key factors like corrosion resistance, força, e custo:

Por exemplo: If you’re building a welded chemical reactor, GB 0Cr18Ni10Ti is better than SUS304 (no intergranular corrosion) and cheaper than SUS316. If you’re making a home kitchen sink, no entanto, SUS304 is more cost-effective.

Perspectiva da tecnologia YIGU

Na tecnologia Yigu, Nós fornecemosGB 0Cr18Ni10Ti to chemical, Aeroespacial, and food clients for 14 anos. Its biggest strength isEstabilização de titânio—it eliminates the need for post-weld heat treatment, saving clients time and money. Our data shows it reduces welded part failures by 35% vs.. SUS304 in high-heat projects. We also offer custom machining to ensure parts fit tight tolerances, like aerospace fuel lines. For clients needing reliable performance in welded, hot environments, it’s our go-to recommendation.

Perguntas frequentes

1. Can GB 0Cr18Ni10Ti be used in seawater?
   No—its Pitting Resistance Equivalent (PRE) de 18 is too low for saltwater. It will develop pitting corrosion over time. For marine applications, use SUS316 or duplex stainless steel instead.
2. Do I need post-weld heat treatment for GB 0Cr18Ni10Ti?
   Não-Estabilização de titânio binds carbon, preventing intergranular corrosion. This skips the need for post-weld annealing, unlike SUS304 (which requires heat treatment after welding for corrosive projects).
3. Is GB 0Cr18Ni10Ti safe for food contact?
   Yes—it meets global food safety standards (Por exemplo, China’s GB 4806.9). Its non-toxic composition and resistance to high temperatures make it ideal for baking ovens and food sterilizers.