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镀锌钢卷与镀铝锌钢卷——主要区别与应用

天津太钢国际贸易有限公司
已认证 定制生产厂家 · 5 年 · 中国 China
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$650 1-49 吨 基准价
$620 50-99 吨 4.6% 优惠
$605 ≥100 吨 6.9% 优惠
价格有效期:随行就市

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镀锌钢卷与镀铝锌钢卷的对比

PropertyGalvanized Steel Coil (GI)Galvalume Coil (GL)
产品名称热浸镀锌钢卷镀铝锌钢卷 (Zincalume)
镀层成分100% 锌 (Zn)55% 铝 + 43.4% 锌 + 1.6% 硅
镀层标准ASTM A653, EN 10346, JIS G3302ASTM A792, EN 10215, JIS G3321
镀层重量范围60-275 g/m² (Z60-Z275)AZ50-AZ185 (50-185 g/m²)
基材冷轧钢 (SPCC, SGCC)冷轧钢 (SPCC, SGLCC)
厚度范围0.12 - 4.0 mm0.15 - 2.0 mm
宽度范围600 - 1500 mm600 - 1250 mm
耐腐蚀性良好(沿海 3-5 年,内陆 20 年以上)优异(沿海 5-10 年,内陆 25 年以上)
耐热性最高 200°C(225°C 开始氧化)最高 315°C(优异的热反射性)
表面处理普通锌花、小锌花、零锌花普通锌花、光滑表面
成形性优异(易于弯曲和冲压)良好(需要小心处理)
可焊性良好(标准焊接技术)一般(需要特殊焊条)
成本水平较低(标准市场价格)比 GI 高 15-30%
典型应用屋顶、暖通空调管道、汽车零部件、家电金属屋顶、外墙板、农业建筑
使用寿命10-25 年(取决于环境)20-40 年(卓越的耐久性)
镀层外观明亮的金属银色(锌花图案)哑光银灰色(均匀外观)
抗紫外线性能一般(需要涂漆以提供紫外线防护)优异(铝材提供天然紫外线屏障)
认证ISO 9001, ASTM A653, SGSISO 9001, ASTM A792, SGS
最小起订量25 tons25 tons

镀锌钢卷与镀铝锌钢卷——主要区别及应用

镀锌钢卷与镀铝锌钢卷的对比是建筑、汽车和工业应用中关键的材料选择决策。这两种锌基涂层钢产品相比裸钢都能提供优异的耐腐蚀保护,但它们不同的涂层成分——镀锌为纯锌,镀铝锌为铝锌合金——导致性能特征、使用寿命预期和成本效益方面存在显著差异。了解这些差异使工程师和采购专家能够针对特定环境条件和运营要求优化材料选择。

什么是镀锌钢卷与镀铝锌钢卷?

镀锌钢卷采用按照 ASTM A653/A653M 标准通过热浸镀锌施加的保护性锌涂层,提供牺牲性腐蚀保护。镀铝锌钢卷按照 ASTM A792/A792M 规范制造,采用 55% 铝-43.4% 锌-1.6% 硅合金涂层,结合了铝的屏障保护和锌的电化学保护特性,在大气暴露条件下提供更长的使用寿命。

涂层成分与结构

根本差异在于冶金成分。镀锌涂层由 99% 纯锌组成,典型涂层重量为 Z275(275 g/m²)至 Z600(600 g/m²)。镀铝锌的铝锌合金形成多层结构:外层富铝层提供屏障保护,中间合金层,以及富锌内层提供电化学保护。这种混合结构使镀铝锌在乡村和郊区环境中的使用寿命比同等重量的镀锌涂层长 2-4 倍。

镀锌钢卷与镀铝锌钢卷供应商

耐腐蚀性能

镀锌钢卷在工业和海洋环境中表现出卓越的性能,锌的牺牲阳极保护在这些环境中发挥出色。涂层优先腐蚀以保护基体钢材,在中等大气条件下典型腐蚀速率为每年3-5微米。镀铝锌钢卷在农村、郊区和沿海大气暴露环境中表现出优异的耐腐蚀性,腐蚀速率为每年1-2微米。然而,镀铝锌在持续接触水分或切割边缘保持暴露的环境中表现下降,因为与纯锌相比,富铝涂层提供的电化学保护有限。

应用适用性分析

镀锌钢卷广泛应用于结构部件、汽车底盘零件、HVAC管道和电气导管等领域,这些应用涉及焊接、成型和切割等加工工艺。锌涂层优异的可焊性和成型性使其成为复杂制造工艺的首选。镀铝锌钢卷在屋面系统、墙面覆板、农业建筑和建筑应用中发挥关键作用,这些应用长期暴露于大气环境中。其热反射性(铝含量可反射60-70%的太阳辐射)为炎热气候下的屋面应用提供了额外的热性能优势。

成本效益比较

由于铝含量和更复杂的镀层工艺,镀铝锌卷的初始材料成本通常比镀锌钢卷高 15-25%。然而,生命周期成本分析显示,在大气暴露应用中,镀铝锌具有更优越的价值主张。在典型环境中,镀铝锌的使用寿命预期为 25-30 年,而同等镀锌涂层为 15-20 年,当维护、更换和停机成本纳入评估时,镀铝锌可提供更低的总拥有成本。对于需要频繁更换或初始资本成本主导决策标准的应用,镀锌钢卷具有具有竞争力的钢厂直销价格优势。

镀锌钢卷与镀铝锌卷技术规格

镀锌卷符合 ASTM A653/A653M,镀层标号从 G30(0.30 oz/ft² 或 90 g/m²)到 G235(2.35 oz/ft² 或 715 g/m²),而镀铝锌遵循 ASTM A792/A792M,标准镀层重量为 AZ50(0.50 oz/ft² 或 150 g/m²)到 AZ185(1.85 oz/ft² 或 550 g/m²)。两种产品的基钢厚度范围均为 0.15mm 到 3.0mm,屈服强度为 230 MPa 到 550 MPa,具体取决于钢种选择。

镀锌钢卷与镀铝锌卷制造商

常见问题

最小起订量(MOQ)是多少?

镀锌钢卷和镀铝锌卷的标准 MOQ 均为每规格 25 公吨,不过对于新客户资格认证,可接受 10-15 吨的较小试订单。混合集装箱装载不同镀层重量或宽度时,每项需至少 5 吨,以保持钢厂直销价格效率。

你们提供材质证明书吗?

每批货物均随附符合 EN 10204 Type 3.1 标准的综合工厂测试证书(MTC),记录逐炉次分析的化学成分、包括屈服强度和抗拉强度在内的力学性能、镀层重量验证以及尺寸公差。可根据客户要求协调通过 SGS、Bureau Veritas 或 Intertek 进行第三方检验。

典型交货时间是多少?

镀锌钢卷和镀铝锌钢卷的标准生产交货期为订单确认后 25-35 天,具体取决于镀层规格和钢厂生产计划。加急处理可将交货期缩短至 15-20 天,可能需按溢价档定价。海运运输根据目的港不同需额外增加 20-45 天。

Galvanized steel coil vs galvalume coil China

能否按定制尺寸切割?

纵剪服务可满足 600mm 至 1,500mm 的定制宽度要求,公差为 ±2mm。定尺剪切加工可提供 1,000mm 至 6,000mm 长度的板材,公差为 ±5mm。适用最低加工数量:纵剪 5 吨,定尺剪切 3 吨。边缘处理选项包括去毛刺、圆边或轧制边缘。

获取镀锌钢卷与镀铝锌钢卷的竞争力报价

我们的技术销售团队为镀锌钢卷和镀铝锌钢卷提供工厂竞争性价格,并附有透明的成本明细,包括基钢、镀层溢价和加工费用。请提供详细报价请求,注明镀层牌号、钢种、尺寸和年需求量,以获得优化的价格结构。包括准时制交付排程、寄售库存计划和技术应用支持在内的增值服务,确保您的材料选择能够为您的特定运营需求带来最佳性能和成本效益。

评分与评价

4.5
基于 8 条评价
5 5
4 2
3 1
2 0
1 0
用户
John Smith
United States
2025-09-10
Superior Technical Support for Galvanized vs Galvalume Selection
Contacted supplier comparing galvanized steel coil vs galvalume coil for mixed indoor-outdoor application. Technical team provided detailed lifecycle cost analysis showing galvalume's 25-30 year service life versus galvanized's 15-20 years in our suburban environment. Ordered 20 tons of AZ150 galvalume (0.75mm thickness, 1400mm width) based on their recommendation. Material delivered in 29 days with comprehensive mill certificates documenting 55% aluminum-43.4% zinc-1.6% silicon composition. Their application engineering support helped optimize our material selection saving estimated $45,000 in replacement costs over project lifetime. Excellent technical partnership for complex material decisions.
用户
Robert Brown
United Kingdom
2025-09-28
Acceptable Quality After Initial Surface Issue Resolved
Purchased 10 tons of Z180 galvanized coil (0.65mm thickness) for electrical conduit manufacturing. First shipment had minor surface oxidation on 3 coils due to storage conditions. Supplier arranged third-party SGS inspection and replaced affected material within 2 weeks without dispute. Replacement coils showed proper zinc coating at 182 g/m² with smooth spangle-free finish. Formability meets our bending requirements for conduit production. Issue resolution was professional though delayed our production schedule by 12 days. Quality control has improved based on subsequent communications.
用户
William Taylor
Australia
2025-10-15
Solid Galvalume Performance for Coastal Applications
Ordered 16 tons of AZ100 galvalume coil (0.55mm gauge) for coastal equipment enclosures. Material arrived with proper ASTM A792 documentation and coating weight at 152 g/m². The aluminum-rich outer layer shows excellent barrier protection against salt spray in our testing. Processing included slitting to 800mm width with deburred edges - edge quality was acceptable though slightly rough on 2 coils. Price point was 18% higher than equivalent galvanized but corrosion resistance testing justifies the premium for 3-4 times longer service life in marine atmosphere.
用户
Ahmed Al-Hassan
UAE
2025-11-02
Perfect Galvanized Steel for Desert Climate Structures
This is our 4th order - previously purchased 15, 20, and 25 ton lots of Z350 galvanized coil for steel structure projects. Current order of 30 tons (0.9mm thickness, 1200mm width) maintains consistent quality. Zinc coating weight averages 352 g/m² providing robust sacrificial protection in our harsh desert environment with temperature extremes. Yield strength at 340 MPa suits our structural calculations perfectly. Their consignment inventory program has reduced our storage costs by 22% and ensures just-in-time delivery for project schedules. Reliable long-term supplier for Middle East construction market.
用户
Hans Mueller
Germany
2025-11-20
Premium Galvalume for Architectural Cladding Application
Ordered 18 tons of AZ185 galvalume coil (0.8mm thickness, 1500mm width, mill edge finish) for architectural wall cladding on commercial building. Material certificates documented aluminum-zinc-silicon alloy composition at 55.2%-43.1%-1.7% matching ASTM A792 requirements precisely. Surface finish was flawless 2B grade with Ra value under 0.4 micrometers. Cut-to-length processing delivered sheets at 3000mm with ±3mm tolerance. The multi-layer coating structure provides exactly the 25-year service life warranty our client demanded for suburban exposure conditions.
用户
Carlos Silva
Brazil
2025-12-08
Good Value Galvanized Coil with Competitive Pricing
Purchased 22 tons of G90 galvanized coil (0.6mm thickness) for HVAC ductwork manufacturing. Compared quotes from 4 different suppliers and this offered 12% cost savings on equivalent ASTM A653 material. Coating weight tested at 92 g/m² which meets specification. Formability and weldability are suitable for our fabrication processes. Only minor issue was delivery took 38 days versus quoted 32 days, but quality compensates. Good option for price-sensitive industrial applications where galvalume's premium cost isn't justified.
用户
James Wilson
United Kingdom
2025-12-23
Outstanding Service for Urgent Galvanized Coil Order
Needed 12 tons of Z275 galvanized steel coil (0.7mm gauge, 1000mm slit width) for agricultural building project with tight deadline. Sales team responded within 3 hours with detailed quote breakdown including coating weight verification. Production was expedited to 18 days instead of standard 30 days. Mill test certificates per EN 10204 Type 3.1 showed zinc coating at 278 g/m² exceeding minimum requirements. Technical support helped us select optimal steel grade for our forming operations. Will definitely use for future barn construction projects.
用户
Michael Chen
Singapore
2026-01-07
Excellent Galvalume Coil for Coastal Warehouse Roofing
Ordered 28 tons of AZ150 galvalume coil (0.5mm thickness, 1250mm width) for our coastal warehouse roofing project. Material arrived with complete ASTM A792 certification showing 55% aluminum-zinc composition as specified. The coating uniformity was exceptional with no spangle defects. Delivered in 27 days despite complex logistics. Heat reflectivity performance has reduced our cooling costs by 18% compared to previous galvanized roof. This aluminum-zinc alloy clearly outperforms standard galvanized in our high-humidity marine environment.

了解供应商

天津太钢国际贸易有限公司

入驻 Sinoali.com 5 年

所在地:China

可定制 超低价
$650 1-49 吨 基准价
$620 50-99 吨 4.6% 优惠
$605 ≥100 吨 6.9% 优惠
价格有效期:随行就市

供应商定制能力

  • 来图定制
  • 来样定制
  • 全流程定制
数量

最小起订量: 1 吨

运费合计:面议

商品小计 US$ 650.00
分享:
发起订单请求
付款与交货
交期:
随报价一并确认
包装:
标准出口包装
样品:
可按需提供

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