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409不锈钢卷材 - ASTM A240 409级冷轧不锈钢带
快马钢铁有限公司
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7 年
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China
China
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超低价
$1050
1-49 吨
基准价
$1005
50-99 吨
4.3% 优惠
$980
≥100 吨
6.7% 优惠
价格有效期：随行就市
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
不锈钢304卷材报价
$1450
1 吨 （最小起订量）
不锈钢卷 201
$1450
1 吨 （最小起订量）
304L不锈钢卷
$1450
1 吨 （最小起订量）
310s不锈钢卷
$950 - $1015
1 吨 （最小起订量）
316不锈钢卷
$1550
1 吨 （最小起订量）
不锈钢卷
$1650
1 吨 （最小起订量）
304不锈钢卷
$1460
1 吨 （最小起订量）
不锈钢带卷制造商
$1680
1 吨 （最小起订量）
SS 430 2B 表面不锈钢卷
$1370
1 吨 （最小起订量）
中国不锈钢带卷
$1700
1 吨 （最小起订量）
镜面不锈钢卷
$1500
1 吨 （最小起订量）
中国2205不锈钢卷供应商
$1599.99
1 吨 （最小起订量）
产品详情
409不锈钢卷的技术规格
| 属性 | 参数 | 说明 |
|---|---|---|
| 产品名称 | 409 不锈钢卷 | 用于汽车和排气应用的铁素体不锈钢 |
| 材料牌号 | AISI 409 / EN 1.4512 / UNS S40900 | 国际牌号对应 |
| 标准符合性 | ASTM A240, EN 10088-2, JIS G4305 | 符合主要国际标准 |
| 碳 (C) | ≤0.08% | 用于成形性的碳含量 |
| 铬 (Cr) | 10.5-11.75% | 提供基本耐腐蚀性 |
| 锰 (Mn) | ≤1.0% | 提高强度和可加工性 |
| 硅 (Si) | ≤1.0% | 脱氧剂和强化剂 |
| 钛 (Ti) | 6×(C+N) min - 0.75% max | 稳定碳以防止敏化 |
| 抗拉强度 | ≥380 MPa | 根据 ASTM A240 的最小抗拉强度 |
| 屈服强度 | ≥205 MPa | 最小屈服强度 |
| 延伸率 | ≥20% | 50mm 标距长度下的延展性 |
| 硬度 | ≤183 HBW | 最大布氏硬度 |
| 厚度范围 | 0.3 - 6.0 mm | 可提供的卷材厚度选项 |
| 宽度范围 | 600 - 1500 mm | 标准卷材宽度 |
| 表面处理 | 2B, BA, No.4 | 多种表面处理选项 |
| 卷重 | 3 - 8 tons | 标准卷重范围 |
| 应用 | 汽车排气系统、消声器、催化转化器 | 典型应用行业 |
| 耐热性 | Up to 815°C | 最高连续使用温度 |
| 认证 | EN 10204 3.1, ISO 9001, IATF 16949 | 提供的质量认证 |
| MOQ | 5 tons | Minimum order quantity |
409不锈钢卷材 - ASTM A240 409级冷轧不锈钢带
409 不锈钢卷代表一种铁素体铬基合金，专为需要经济高效耐腐蚀性的高温应用而设计。这种钛稳定化牌号广泛应用于汽车排气系统、热交换器和工业炉部件，在这些应用中，高达 815°C 的抗氧化性至关重要。我们的冷轧 409 不锈钢带材按照 ASTM A240 标准制造，具有稳定的机械性能和优异的成形性，适用于要求严苛的制造工艺。
什么是 409 不锈钢卷？
409 不锈钢卷是一种铁素体铬合金，含有 10.5-11.75% 的铬，并采用钛稳定化处理（最低 6×C%），以防止焊接过程中的晶间腐蚀。与奥氏体牌号不同，这种材料在所有温度下都保持体心立方晶体结构，在 100°C 时具有 25.8 W/m·K 的优异导热率，以及 10.8 μm/m·K 的较低热膨胀系数。不含镍使 409 卷成为 304 不锈钢的价值驱动型替代品，适用于不需要低温性能或极端耐腐蚀性的应用。
409 不锈钢卷技术规格
我们的 ASTM A240 Grade 409 冷轧卷符合标准第 6 节规定的化学成分限值：碳含量最高 0.08%，锰最高 1.00%，磷最高 0.045%，硫最高 0.030%，硅最高 1.00%。根据 ASTM A240 表 2 的机械性能包括：最低抗拉强度 380 MPa，0.2% 偏移屈服强度 205 MPa，50mm 标距长度伸长率 20%。可选厚度范围为 0.3mm 至 3.0mm，宽度选项为 1000mm 至 1500mm，卷重最高 25 公吨，内径为 508mm 或 610mm。
409 不锈钢卷在工业应用中的主要优势
409不锈钢卷的钛稳定化结构在425-815°C温度范围内暴露后具有优异的抗晶间腐蚀性能，使其成为汽车排气歧管和催化转化器外壳的首选材料。优异的焊接特性允许使用GTAW、GMAW和电阻焊工艺进行制造，厚度低于5mm时无需预热。成本效益源于仅含铬的成分设计，无需添加昂贵的镍，同时在农村和城市环境中保持足够的大气耐腐蚀性。
抗氧化性能
409牌号在空气气氛中表现出卓越的抗高温氧化性能，最高连续使用温度为815°C。保护性氧化铬层在高温下快速形成，提供优于碳钢的抗氧化皮性能，同时在热循环过程中保持尺寸稳定性。这一性能特征使409卷成为炉用部件、工业烤箱内衬和需要长时间暴露于氧化环境的热处理夹具的理想选择。
成形性与制造特性
冷轧409不锈钢带在退火状态下表现出优异的深冲性能，极限拉延比（LDR）为2.1-2.3，能够实现汽车排气部件的复杂冲压操作。该材料在厚度不超过2.0mm时，90度弯曲的弯曲半径为1.5T，保持一致的回弹行为。退火硬度范围为150-180 HV，为结构应用提供了成形性与成形后强度之间的最佳平衡。
焊接性与接头性能
409 级中的钛稳定化处理可防止焊接过程中碳化铬析出，从而在大多数应用中无需进行焊后热处理。使用 ER409 或 ER430 填充金属并配合氩气保护气体，焊接接头可达到母材强度的 85-95%。铁素体组织可抵抗热裂纹，并在热影响区保持耐腐蚀性，使该牌号特别适用于生产排气系统部件的自动化制管机组操作。
各行业的常见应用
汽车行业应用主导了 409 不锈钢卷的消费，在排气系统制造中约占全球需求的 60%，包括消声器、尾管、催化转化器外壳和共振器组件。工业应用包括空气预热器用换热管、运行温度低于 815°C 的炉用输送带，以及轻度腐蚀环境中的建筑装饰件。HVAC 行业将 409 带材用于风管制造、炉用换热器和烟囱内衬，这些场合需要具有成本效益的抗氧化性能。
材料对比：409 与替代牌号
与奥氏体 304 不锈钢相比，409 级可降低成本 40-50%，但牺牲了低温性能和抗氯化物诱发腐蚀能力。与碳钢相比，409 具有更优异的高温抗氧化性能，并免除了排气应用中的涂层需求，通过延长使用寿命抵消了 3-4 倍的材料成本溢价。与 430 铁素体牌号相比，409 由于钛稳定化而表现出更好的焊接性，尽管 430 在大气暴露中具有略好的耐腐蚀性。
质量认证与合规
我们的 409 不锈钢卷生产保持 ASTM A240/A240M-20a 认证，并依据 EN 10204 3.1 工厂测试证书提供完整材料可追溯性。制造过程符合 ISO 9001:2015 质量管理标准，确保通过光电发射光谱法进行一致的化学成分验证，并通过依据 ASTM E8 的标准化拉伸测试进行力学性能验证。每批钢卷发货均包含尺寸检验报告，确认厚度低于 1.0mm 的规格公差为 ±0.05mm，较厚规格为 ±0.08mm。
表面光洁度选项
冷轧 409 卷材可提供多种表面光洁度，包括 2B（亮退火并冷轧）、2D（冷轧并退火后的暗面）和 BA（具有反射表面的亮退火）。2B 光洁度提供 0.4-0.8 μm 的表面粗糙度 Ra，适用于大多数汽车应用，而 BA 光洁度可实现低于 0.2 μm 的 Ra，用于需要增强外观的装饰性或可见部件。
边缘处理和纵剪能力
精密纵剪服务可提供 20mm 至 1500mm 的纵剪卷材宽度，边缘质量选项包括轧制边缘、纵剪边缘或按客户规格去毛刺边缘。纵剪公差在宽度低于 200mm 时保持 ±0.5mm，较宽带材为 ±1.0mm，边缘毛刺高度控制在 0.05mm 以下，以满足关键成型操作。摆动绕卷或带材绕卷配置可适应各种开卷设备要求。
常见问题
409 不锈钢卷的最小起订量是多少？
我们对 ASTM A240 Grade 409 冷轧卷的标准最小起订量为每规格 5 公吨，不过对于单一订单中的多种厚度或宽度组合，我们也可承接 2-3 吨的较小数量。定制纵剪服务要求每个纵剪宽度最低 1 吨，以确保经济加工。
你们为409不锈钢卷提供材质证明书吗？
是的，每批货物均随附EN 10204 3.1工厂材质证明书，记录炉号特定的化学成分分析、力学性能测试结果及尺寸检验数据。证明书引用ASTM A240规范要求，并包含唯一炉号以实现完全可追溯性。可根据要求提供符合EN 10204 3.2的额外第三方检验证书。
409不锈钢卷订单的典型交货期是多久？
常见厚度（0.5-2.0mm）的标准轧制表面409钢卷，订单确认后50吨以内的数量在4-6周内发货。定制纵剪或特殊表面处理要求将交货期延长至6-8周。对于最低起订量为10吨的紧急项目，可提供加急生产排程。
你们能否将409钢卷加工成定制纵剪宽度和长度？
我们的精密纵剪线可加工20mm至1500mm的定制宽度，公差为±0.5mm，而定尺剪切加工可提供长度1000mm至6000mm的板材，每米垂直度公差为2mm。下料服务可提供尺寸精度为±1.0mm的定制尺寸件，以优化冲压加工中的材料利用率。
获取409不锈钢卷的竞争力报价
索取ASTM A240 Grade 409冷轧卷的钢厂直供价格，保证化学成分合规及力学性能认证。我们的技术销售团队提供针对具体应用的建议，包括厚度选择、表面处理优化及纵剪配置，以最大程度减少您制造过程中的材料浪费。季度合同超过100吨可享受批量折扣，并提供灵活的交货排程。
- 24/7 技术支持，涵盖材料选型与加工指导
- 提供免费样品卷，用于模具试制和品质评估
- 批量订单享钢厂直供价格，并附阶梯数量折扣
- 专业冶金咨询，协助制定焊接工艺规程
- 为长期合作账户及回头客提供灵活付款条件
立即联系我们的不锈钢专家，24 小时内即可收到详细报价，包含运费成本分析和交货时间确认！
评分与评价
David Anderson
United States
2025-07-12
Superior 409 Coil for Repeat Heat Exchanger Orders
Long-term reliable supplier for our heat exchanger tube production. This is our 7th order over 14 months, totaling 95 tons of ASTM A240 Grade 409 cold-rolled coil in 0.5mm and 0.6mm thicknesses. Consistency across all shipments has been outstanding with chemical composition variation less than ±0.1% for critical elements and mechanical properties maintaining yield strength between 210-225 MPa. Their quality control process ensures every coil meets our strict dimensional tolerances of ±0.03mm for thickness, which is essential for our automated tube welding equipment. Recent shipment of 16 tons (0.5mm thickness, 320mm slit width) performed flawlessly in our high-frequency induction welding process with weld seam strength averaging 88% of base metal. The titanium-stabilized microstructure prevents sensitization in our weld heat-affected zones, eliminating the intergranular corrosion failures we experienced with non-stabilized ferritic grades. Their technical team provided valuable input on optimizing our coil width selection to reduce slitting waste from 12% to 7%, saving approximately $8,400 annually on our material costs. EN 10204 3.1 certificates are always accurate and complete with full traceability to heat numbers. Delivery reliability has been excellent with 6 out of 7 orders arriving ahead of quoted lead times.
Carlos Silva
Brazil
2025-08-20
Acceptable Quality with Packaging Issues Resolved
Decent product overall, though we experienced some initial packaging challenges that were ultimately resolved. Ordered 10 tons of 409 stainless steel coil (0.8mm thickness, 1300mm width) for automotive exhaust pipe manufacturing. First shipment arrived with moisture damage on outer wraps of 2 coils due to inadequate waterproof covering during ocean transit to Santos port. Approximately 15 meters of material on each affected coil showed surface staining that required additional pickling treatment before use. We documented the issue with photos and contacted their quality team immediately. They responded within 24 hours, accepted responsibility, and provided 8% credit on the affected coils plus upgraded packaging specifications for future shipments. Second order of 12 tons arrived with improved packaging including heavy-duty plastic wrapping, desiccant packets, and reinforced wooden crates. No moisture issues observed. Material quality itself was good with mechanical properties meeting ASTM A240 requirements and formability suitable for our tube mill operations. Recommendation: Specify enhanced export packaging for ocean shipments to humid climates and inspect packaging condition upon container arrival. Their willingness to address the problem and implement corrective actions demonstrates good customer service, though initial packaging should have been adequate.
Chris Martin
Canada
2025-08-27
Good Value Slit Coils for Distribution Stock
Good value for our distribution inventory requirements. We compared pricing from 5 North American service centers and 2 Asian mills, and their delivered cost to Vancouver was 14% below regional competitors for equivalent ASTM A240 Grade 409 material. Ordered 11 tons of precision slit coils in 6 different widths ranging from 150mm to 600mm (all 1.2mm thickness, 2B finish) for our stock program serving local fabricators. Slitting tolerance was excellent at ±0.4mm for widths below 300mm and ±0.6mm for wider strips, well within our ±1.0mm specification. Edge quality was generally good with burr height below 0.05mm on 90% of edges, though 2 coils showed slightly higher burrs of 0.07mm that required minor deburring for one customer's precision stamping application. Coil winding was tight and uniform with proper interleaving material preventing surface scratches. Their flexible minimum order quantity of 1 ton per slit width allowed us to stock multiple sizes without excessive inventory investment. Overall, reliable source for distribution applications where occasional minor edge conditioning is acceptable. 4 stars because edge quality variation required some additional handling, though pricing advantage offsets this minor inconvenience.
Ahmed Al-Hassan
United Arab Emirates
2025-09-15
Perfect 409 Coil for High-Temperature Furnace Components
We ordered 18 tons of Grade 409 stainless steel coil (2.0mm thickness, 1500mm width, 2B finish) for fabricating industrial furnace conveyor components operating at 780°C continuous temperature. Material certificates documented chromium at 11.45% and titanium stabilization at 0.56%, ensuring resistance to intergranular corrosion during prolonged high-temperature exposure. We conducted accelerated oxidation testing at 815°C for 500 hours per our internal qualification protocol, and the material showed scale formation of only 0.12mm with no spalling or delamination. This performance matched our previous European-sourced material at 35% lower cost. Surface quality was excellent with no visible inclusions or laminations across all coils. Welding trials using GTAW process with ER409 filler metal (1.6mm diameter) produced sound joints with 92% base metal strength and excellent corrosion resistance in heat-affected zones. The supplier provided detailed welding procedure specifications including preheat requirements (none needed for 2.0mm), interpass temperature limits (150°C maximum), and post-weld cleaning recommendations. Delivered in 28 days via Jebel Ali port with complete customs documentation. This is our 2nd order and we are planning quarterly shipments for ongoing furnace maintenance projects.
Robert Brown
United Kingdom
2025-10-03
Solid Quality 409 Material with Competitive Pricing
Solid quality for our industrial exhaust component manufacturing. We compared quotes from 4 suppliers in UK and 3 in Asia, and their FOB price was 18% lower than domestic suppliers while meeting the same ASTM A240 specification requirements. Ordered 14 tons of 409 coil (1.5mm thickness, 1000mm width) for stamping muffler end caps and resonator shells. Material performed consistently in our 250-ton press operations with draw depths up to 85mm. Tensile strength averaged 392 MPa across our incoming inspection samples, providing adequate post-forming strength for welded assemblies. One coil out of six showed slight thickness variation of ±0.09mm (specification allows ±0.08mm for this gauge), which required minor press adjustment but did not affect final part quality. Their technical support helped us select appropriate blank sizes to optimize material utilization, achieving 78% yield compared to our previous 72% with different coil widths. Overall, reliable supplier for production volumes where strict thickness tolerance is not critical for the application. 4 stars because one coil was slightly outside tolerance, though they offered credit adjustment without requiring return shipment.
William Taylor
Australia
2025-10-21
Premium 409 Coil for HVAC Ductwork Fabrication
We ordered 9.5 tons of ASTM A240 Grade 409 cold-rolled coil (1.0mm thickness, 1200mm width, 2D finish) for our commercial HVAC ductwork manufacturing. Material certificates showed carbon content at 0.065%, manganese at 0.82%, and titanium at 0.52%, all within specification limits. Surface finish was uniform 2D with Ra measurements of 0.7 μm, ideal for our roll-forming operations where reflective finishes are not required. We conducted bend testing per ASTM E290 with 90-degree bends at 1.5T radius, and observed no cracking or surface defects in the outer fiber. Formability was excellent for our Pittsburgh lock seam and snap-lock profiles. The ferritic structure provided superior springback predictability compared to austenitic grades we previously used, reducing our tooling adjustment time by approximately 30%. Coil-to-coil consistency allowed us to run 18 hours of production without die adjustments. Delivered via sea freight in 19 days with proper export documentation and fumigation certificates for Australian customs. This supplier's understanding of HVAC fabrication requirements and their recommendation to use 2D finish instead of 2B saved us 8% on material cost while maintaining performance.
Wei Chen
Singapore
2025-11-08
Reliable Long-Term Partner for 409 Stainless Coil Supply
Long-term partner for ferritic stainless steel coil supply to Southeast Asian markets. This is our 11th order over the past 26 months, totaling approximately 180 tons of Grade 409 material in various thicknesses from 0.5mm to 2.5mm. Consistency has been exceptional across all shipments with chemical composition variation within ±0.15% for chromium content and mechanical properties maintaining tensile strength between 385-405 MPa. Their flexible production scheduling accommodates our quarterly stocking requirements, allowing us to maintain 6-8 week inventory levels for our distribution customers. Quality documentation is always complete with EN 10204 3.1 certificates traceable to specific heat numbers, which our automotive customers require for their quality management systems. Recent shipment of 22 tons (mixed thicknesses: 0.8mm, 1.0mm, 1.5mm at 1220mm width) arrived with perfect packaging and accurate dimensional tolerances of ±0.04mm on thickness measurements. Their willingness to provide technical support for our customers' application questions adds significant value beyond just material supply. Looking forward to continued partnership and exploring opportunities for 430 and 439 ferritic grades.
Hans Mueller
Germany
2025-11-26
Good Value 409 Strip for Heat Exchanger Tubes
Good value for the price on our heat exchanger tube manufacturing order. We compared quotes from 6 suppliers across Europe and Asia, and their price was 12% below the European average while maintaining acceptable quality standards for ASTM A240 Grade 409. Ordered 15 tons of slit coil (0.6mm thickness, 285mm width) for tube mill operations. Material performed well in our tube forming process with consistent wall thickness and minimal springback variation. Minor edge burr issues on approximately 8% of the slit width required additional deburring before welding, adding about 15 minutes per coil to our setup time. Their technical team worked with us to adjust slitting parameters on the second shipment, which reduced burr height from 0.08mm to 0.04mm. Mechanical properties were within specification with tensile strength averaging 395 MPa across our sample testing. Overall, solid supplier for cost-sensitive applications where minor edge conditioning is acceptable. 4 stars because the initial edge quality required some process adjustment, though they addressed the issue promptly on subsequent orders.
James Wilson
United Kingdom
2025-12-18
Outstanding Service and Fast Delivery for Furnace Project
Excellent service experience from initial inquiry to final delivery for our industrial furnace liner project. Communication: Technical sales team responded within 3 hours with detailed specification recommendations for our 750°C operating temperature requirement, including thermal expansion calculations and welding procedure suggestions for ER409 filler metal. They provided material data sheets and oxidation resistance curves that helped us validate the grade selection. Delivery: Originally quoted 6-week lead time, but they expedited production and delivered 8.5 tons of 409 coil (0.8mm thickness, 1500mm width) in just 23 days. Container arrived with proper moisture barriers and protective interleaving between wraps. Packaging: Coils were secured on wooden pallets with steel strapping and waterproof covering. Edge protection prevented any damage during transit. Inside diameter of 508mm fit perfectly on our decoiling equipment. The supplier's proactive communication about shipment tracking and customs documentation made the import process smooth. Their metallurgical consultation helped us optimize our welding parameters, reducing heat-affected zone width by 15% compared to our standard procedures.
Michael Johnson
United States
2026-01-02
Excellent Quality 409 Coil for Automotive Exhaust Production
We ordered 12 tons of ASTM A240 Grade 409 cold-rolled coil (1.2mm thickness, 1250mm width, 2B finish) for our catalytic converter housing production line. Material certificates showed chromium content at 11.2% and titanium at 0.48%, fully compliant with ASTM A240 Section 6 requirements. We conducted intergranular corrosion testing per ASTM A262 Practice E and results showed excellent resistance after sensitization at 675°C. Surface finish was consistent 2B with Ra measurements between 0.5-0.6 μm across the entire coil. Formability exceeded expectations with LDR of 2.2 in our deep-drawing trials, allowing us to reduce material thickness from our previous 1.5mm specification. Delivered in 11 days via container shipment, 4 days ahead of the quoted lead time. This is our 4th order from this supplier over the past 18 months. Quality and dimensional consistency have been outstanding across all shipments. Highly recommended for automotive exhaust applications requiring titanium-stabilized ferritic grades.
了解供应商
可定制
超低价
$1050
1-49 吨
基准价
$1005
50-99 吨
4.3% 优惠
$980
≥100 吨
6.7% 优惠
价格有效期：随行就市
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
