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不锈钢板 - 304/316牌号,冷轧与热轧,ASTM A240

飞鸿钢铁有限公司
已认证 定制生产厂家 · 6 年 · 中国 China
可定制 超低价
$1755 1-49 吨 基准价
$1680 50-99 吨 4.3% 优惠
$1640 ≥100 吨 6.6% 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$ 1,755.00
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发起订单请求
付款与交货
交期:
随报价一并确认
包装:
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样品:
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产品详情

不锈钢板技术规范

属性参数描述
产品名称不锈钢板耐腐蚀扁平轧制钢材产品
材料牌号304/304L, 316/316L, 310S, 321, 430多种奥氏体和铁素体牌号可选
标准合规ASTM A240, EN 10088-2, JIS G4304, GB/T 3280符合主要国际标准
碳含量 (C)≤0.03% (L 牌号) / ≤0.08% (标准)低碳变体,提升焊接性能
铬 (Cr)16.0-26.0%耐腐蚀性的主要元素
镍 (Ni)8.0-22.0%增强延展性和奥氏体稳定性
钼 (Mo)2.0-3.0% (316/316L)提高抗点蚀和缝隙腐蚀性能
抗拉强度≥515 MPa按 ASTM A240 标准的最低抗拉强度
屈服强度≥205 MPa0.2% 偏移量下的最低屈服强度
延伸率≥40%50mm 标距长度下的延展性
硬度≤200 HBW (退火状态)软态下的最大布氏硬度
厚度范围0.3mm - 100mm可提供从薄板到厚板的厚度选项
宽度范围1000mm - 3000mm标准宽度,可定制切割
长度范围2000mm - 6000mm 或卷材定尺切割或连续卷材供应
表面处理2B, BA, No.4, HL, 镜面 8K多种表面处理选项,适用于不同应用
应用化工处理、食品设备、船舶、建筑跨行业的多功能应用
认证EN 10204 3.1/3.2, ISO 9001, PED钢厂测试证书和质量认证
包装木托盘、防水纸、钢带出口标准适航包装
MOQ1 ton标准牌号的最小起订量

产品描述

不锈钢板 - 304/316 级,冷轧 & 热轧,ASTM A240

不锈钢板是一种基础材料解决方案,适用于需要卓越耐腐蚀性与结构完整性相结合的行业。这些扁平轧制产品通过精密轧制工艺制造,并提供多种奥氏体牌号,在化学加工、食品生产、建筑应用和海洋环境中发挥关键作用。我们的钢厂直供不锈钢板符合 ASTM A240/A240M-20a 标准,厚度范围为 0.5mm 至 100mm,并提供经认证的化学成分和机械性能,以满足您的特定运营需求。

什么是不锈钢板?

不锈钢板是指厚度超过 4.75mm 的扁平轧制奥氏体或双相合金产品,根据 ASTM 标准的尺寸分类与薄板材料相区分。这些耐腐蚀板材含有至少 10.5% 的铬含量,形成钝化氧化层,在严苛环境中提供卓越的耐久性。制造工艺包括用于较厚规格的热轧和用于精确厚度控制的冷轧,随后进行退火处理以优化冶金性能和表面光洁度特性。

不锈钢板技术规格

我们的不锈钢板库存涵盖 ASTM A240 Grade 304,含 18-20% 铬和 8-10.5% 镍,抗拉强度最低为 515 MPa,屈服强度为 205 MPa。Grade 316L 变体含有 2-3% 钼以增强抗点蚀性能,碳含量保持在最高 0.03% 以下,以防止焊接操作期间的敏化。尺寸公差符合 ASTM A480/A480M 规范,热轧材料的平整度偏差限制为每米 6mm,冷轧精密板为每米 3mm。

制造工艺与表面处理

热轧不锈钢板在1050-1200°C之间进行受控温度加工,随后通过喷丸或酸洗去除氧化皮,以达到ASTM A480表1规定的No.1表面。冷轧板在环境温度下接受额外的压下道次,产生2B表面,反射率为200-300光泽单位。先进的表面处理包括在受控气氛下退火获得的2D哑光表面、达到600+光泽单位的BA(光亮退火)表面,以及用于需要150-180目等效平滑度的建筑应用的No.4方向性抛光。

冷轧与热轧对比

冷轧不锈钢板表现出优异的尺寸精度,对于6mm以下的厚度规格,厚度公差为±0.05mm,而同等热轧材料的公差为±0.4mm。冷加工工艺通过加工硬化机制将抗拉强度提高15-20%,同时在标准拉伸试验中将延伸率从55%降低至45%。对于8mm以上的厚度,热轧板具有12-18%的价格成本优势,使其成为对精确公差要求次于机械强度要求的结构应用的首选。

304牌号的应用与性能

304不锈钢板是行业标准的奥氏体合金,广泛应用于食品加工设备、厨房电器和一般工业制造。该牌号在20°C时密度为7.93 g/cm³,热导率为16.2 W/m·K,从-196°C低温服役到870°C间歇暴露均保持稳定的奥氏体结构。18-8铬镍成分提供了优异的成形特性,对于3mm以下厚度的材料,最小弯曲半径为1T,支持复杂的制造要求而无需中间退火循环。

316L 牌号增强耐腐蚀性能

316L 牌号不锈钢板添加了 2-3% 的钼,使点蚀当量数(PREN)提升至 24-26,而标准 304 材料为 18-20。这种增强型成分在含氯化物环境中表现出优越性能,在 ASTM G48 方法 A 测试下可承受海水暴露,腐蚀速率低于每年 0.02mm。超低碳规格(最高 0.03%)消除了焊接过程中碳化铬的析出,在截面厚度不超过 19mm 时无需焊后热处理即可保持热影响区的耐腐蚀性。

质量认证与测试标准

所有不锈钢板发货均包含符合 EN 10204 类型 3.1 的工厂测试证书(MTC),记录通过光电发射光谱法进行的化学成分分析以及通过标准化拉伸测试进行的力学性能验证。按 ASTM A435 进行的超声波检测可发现等效直径超过 3mm 的内部不连续性,而尺寸检验则确认厚度、宽度和长度测量值在指定公差范围内。第三方认证选项包括 Lloyd's Register、DNV-GL 和 ABS 的海洋应用认证,以及针对石油和天然气作业中酸性环境的 NACE MR0175/ISO 15156 合规文件。

化学成分验证

阳性材料鉴定(PMI)检测采用X射线荧光光谱法,依据ASTM A240表1的要求验证元素成分,特别关注影响耐腐蚀性的铬当量比。通过燃烧分析法测定碳含量,确保符合L级规范,同时氮含量测量确认双相钢中奥氏体的稳定性。可追溯性系统保持从炼钢到最终板材切割的炉号关联,为质量保证和失效分析目的提供完整的材料谱系文档。

力学性能测试规程

依据ASTM E8/E8M进行的拉伸试验使用从板材边缘加工的标准矩形试样,测量0.2%偏移屈服强度、极限抗拉强度以及50mm标距长度上的伸长率。通过洛氏B标尺测试进行硬度验证,确认退火效果,奥氏体钢种的典型值为85-95 HRB,表明热处理适当。依据ASTM A370夏比V型缺口方法进行的冲击试验证明在使用温度下的韧性保持,这对于要求在-196°C下最小吸收能量为27焦耳的低温应用尤为关键。

制造与加工能力

我们的加工设施可对厚度达150mm的板材进行等离子切割,切口宽度为3-5mm,热影响区限制在2mm深度以内,在距切割边缘10mm范围内保持力学性能。水刀切割为精密零件提供零热输入替代方案,达到±0.1mm的公差且不产生材料性能退化。激光切割系统可处理厚度达25mm的304和316L钢种,边缘质量适合直接焊接应用,省去二次打磨工序,与传统机械切割方法相比缩短制造周期30-40%。

成形与弯曲操作

不锈钢板的折弯机成形要求厚度低于6mm的冷轧2B表面材料内侧弯曲半径最小为1T,对于热轧No.1表面则需增至2T以防止表面开裂。弯曲操作过程中的加工硬化会使变形区域的屈服强度提高25-35%,因此对于承受腐蚀性使用条件的部件,需要在1040-1120°C下进行应力消除退火。辊压成形可适应逐渐的曲率发展,圆柱形储罐的最小半径为50T,而拉伸成形可在建筑面板中实现复合曲面,且局部减薄不超过原始厚度的15%。

焊接工艺与填充材料选择

钨极气体保护焊(GTAW/TIG)为不锈钢板接头提供最佳的熔合特性,根据AWS A5.9规范,304母材使用ER308L填充材料,316级应用使用ER316L。98%氩气加2%氢气的保护气体组合可增强电弧稳定性和熔深,而背面保护气体将氧含量维持在20 ppm以下,以防止根部焊道表面出现氧化色。层间温度控制在150-200°C之间可防止过大的热输入导致敏化,对于L级材料建议最大热输入为1.5 kJ/mm,以保持焊接组件的耐腐蚀性。

常见问题

最小起订量(MOQ)是多少?

我们的标准最小起订量为每规格1公吨,但对于需要多种牌号或表面处理的老客户,我们也可接受500kg的较小数量。混装集装箱装载可高效采购各种厚度和表面处理组合,优化库存投资,同时对于总发货重量超过5公吨的订单保持钢厂直供价格优势。

你们提供材质检测证书吗?

每批不锈钢板发货均附有符合 EN 10204 Type 3.1 标准的全面 Mill Test Certificates (MTC),记录完整的化学成分分析、力学性能测试结果及热处理参数,并可追溯至原钢厂生产记录。可根据要求提供 Lloyd's Register、Bureau Veritas 或 SGS 的第三方检验证书,对于超过 10 公吨的订单,免费提供 PMI 检测和尺寸验证报告。

典型交货时间是多久?

标准牌号 304 和 316L、2B 或 No.1 表面的库存材料,在订单确认后 5-7 个工作日内发货;而定制厚度或表面要求则需根据钢厂排产安排 25-35 天生产周期。加急处理可将交货时间缩短至 15-20 天,但需支付优质服务费;对于总重量低于 500kg 的紧急需求,可选择空运,确保材料供应与您的项目关键路径里程碑保持一致。

你们能按定制尺寸切割吗?

我们的精密切割服务可满足从最小 100mm x 100mm 的定制尺寸到 3000mm x 12000mm 的整板尺寸,等离子切割公差控制为 ±1mm,水刀切割为 ±0.5mm。边缘准备包括直切、用于焊接接头准备的坡口切割,以及按您工程图纸进行的圆角切割。切割服务与材料采购合并下单时可享受批量折扣,与单独加工安排相比,总制造成本可降低 15-20%。

获取不锈钢板有竞争力的报价

立即申请定制报价,享受我们的钢厂直采关系,省去中间商加价,相比经销商价格可节省12-18%的成本。我们的技术销售团队提供全面的材料选型指导,确保为您的特定耐腐蚀性、机械强度和加工要求提供最优的牌号和表面处理规格。凭借多个仓库地点超过5,000公吨的库存,我们保证材料供应,全力支持您的生产计划,绝不妥协。

  • 24/7客户支持,可通过电话、电子邮件和在线聊天获取
  • 免费样品用于质量评估——100mm x 100mm试样,附MTC文件
  • 批量订单有竞争力的价格——10公吨起享批量折扣
  • 专业技术咨询——免费提供冶金工程支持

立即联系我们,24小时内获取免费报价!

评分与评价

4.5
基于 10 条评价
5 6
4 3
3 1
2 0
1 0
用户
John Smith
United States
2025-08-03
Acceptable Quality with Minor Surface Issues Resolved
Decent product quality overall, with one issue that was professionally resolved. We ordered 13 tons of 304 cold-rolled stainless steel plate (4mm thickness, 1250mm x 2500mm, 2B finish) for kitchen equipment manufacturing. We noticed some minor surface scratches on 4 plates out of our 52-plate order during incoming inspection. The scratches were superficial (less than 0.1mm depth) but not ideal for our visible appliance application requiring premium appearance. To their credit, the supplier responded within 18 hours and offered immediate replacement of affected plates plus 6% discount on our next order. They also confirmed implementation of additional protective film and revised handling procedures for future shipments. Material quality otherwise met specifications with proper austenitic structure and surface finish. Overall acceptable experience. For aesthetic applications, suggest requesting extra surface protection and inspection documentation.
用户
Carlos Silva
Brazil
2025-08-20
Reliable 304 Plates for Tank Manufacturing
Solid supplier for our stainless steel tank production needs. We ordered 16.5 tons of 304 stainless steel plate (6mm thickness, 2000mm width, 2B finish) for water treatment tank fabrication. Quality was good with proper chemical composition - chromium at 18.3% and nickel at 8.6% per certificates. Mechanical properties met ASTM A240 requirements with tensile strength of 530 MPa. The plates demonstrated excellent forming characteristics with minimum bend radius of 1T without surface cracking during our press brake operations. One observation: delivery took 28 days instead of the quoted 25 days due to customs clearance delays, though this was communicated proactively. Overall good experience. 4 stars for slight delivery delay. Planning third order for our expansion into food-grade storage tank production requiring BA finish material.
用户
Wei Chen
Singapore
2025-09-06
Solid Quality 316L with Competitive Pricing
Good value proposition for Southeast Asian market requirements. We ordered 14 tons of 316L stainless steel plate (5mm thickness, 1500mm x 6000mm, 2B finish) for our chemical processing client in Indonesia. Pricing was approximately 11% lower than European suppliers while maintaining equivalent quality standards. Material certificates showed molybdenum content at 2.5% and carbon at 0.024%, fully compliant with ASTM A240 L-grade specifications. Surface finish quality was consistent across all plates. Minor observation: edge quality from plasma cutting required light grinding on 3 plates out of 45 pieces, adding minimal finishing time. Overall performance meets our distribution requirements. 4 stars due to occasional edge finish variation. Working on establishing regular monthly supply schedule for regional customers.
用户
Robert Brown
United Kingdom
2025-09-23
Good Value 304 Plates for General Fabrication
Good value for the price. We compared quotes from 6 suppliers across China, India, South Korea, and Taiwan. Their pricing was approximately 14% below average while maintaining solid quality with full EN 10204 3.1 certification and ASTM A240 compliance. We ordered 22 tons of 304 hot-rolled plate (10mm thickness, 2000mm width, No.1 finish) for structural fabrication projects. Material quality met specifications with proper chemical composition and mechanical properties. The only minor issue was the initial sample shipment took 9 days to arrive, slightly longer than the 7 days quoted, which delayed our approval process. Overall, excellent cost-performance ratio for our manufacturing needs. 4 stars because sample lead time could be improved. Already placed our second order for 15 tons and negotiating volume discount for quarterly supply agreement.
用户
Chris Martin
Canada
2025-10-10
Excellent Value 316L Plates for Food Processing
Outstanding service and product quality for our food processing client requirements. We ordered 11.5 tons of 316L stainless steel plate (4mm thickness, 1500mm x 3000mm, 2D matte finish) for dairy equipment manufacturing. Communication: Technical consultation provided detailed comparison between 2B and 2D finishes for cleanability requirements, helping us make the optimal selection. Delivery: Material arrived in 13 days with complete documentation including EN 10204 3.1 certificates and NACE MR0175 compliance for our secondary oil & gas customer requirements. Packaging: Annealing under controlled atmosphere produced excellent 2D matte finish with consistent surface texture. Each bundle was properly labeled with heat numbers for full traceability. This supplier combines technical expertise with reliable execution. Already processing our second order for 8 tons.
用户
Ahmed Al-Hassan
UAE
2025-10-27
Perfect Hot-Rolled 304 Plates for Architectural Project
We ordered 18 tons of 304 hot-rolled stainless steel plate (8mm thickness, 2000mm x 6000mm, No.1 finish) for our Dubai commercial tower facade project. Quality Assessment: Chemical composition analysis via optical emission spectroscopy confirmed 18.5% chromium and 8.8% nickel. Tensile testing showed 545 MPa ultimate strength and 225 MPa yield strength, exceeding ASTM A240 minimum requirements. Flatness deviation was limited to 4.5mm per meter, better than the 6mm standard for hot-rolled material. The descaling through acid pickling produced uniform No.1 finish suitable for our architectural application. Dimensional accuracy was excellent with length tolerance of ±3mm on 6-meter plates. This is our 3rd collaboration. Material quality enables efficient fabrication for high-visibility architectural installations.
用户
William Taylor
Australia
2025-11-13
Reliable Long-Term Partner for Marine Applications
Long-term partner for 316L stainless steel plate supply. This is our 7th order over the past 18 months, totaling approximately 95 tons for various marine construction projects. Every shipment has met our specifications without exception - carbon content consistently below 0.025%, molybdenum content within 2.2-2.6% range, and PREN values exceeding 25. Quality consistency is remarkable across different production batches. Their dedicated account manager understands our specific requirements for Australian marine standards and ensures smooth order processing with proactive communication about mill scheduling. Technical support team provided valuable welding procedure recommendations for our ER316L filler applications. Looking forward to continued partnership for our harbor infrastructure expansion projects.
用户
Hans Mueller
Germany
2025-11-30
Premium 304 Cold-Rolled Plates for Precision Equipment
We ordered 6.8 tons of 304 stainless steel plate (3mm thickness, 1250mm width, BA finish) for our pharmaceutical processing equipment manufacturing. Quality Assessment: Material certificates showed chromium content at 18.2% and nickel at 8.4%, fully compliant with ASTM A240 Table 1 requirements. We conducted hardness testing and confirmed 88 HRB, indicating proper annealing. BA surface finish achieved 650+ gloss units with mirror-like reflectivity. The cold-rolled precision was exceptional with thickness tolerance of ±0.04mm across all sheets, enabling direct installation without additional grinding. Surface quality was flawless with zero inclusions or laminations detected during ultrasonic examination per ASTM A435. This is our 2nd order. Quality consistency is remarkable for pharmaceutical-grade applications.
用户
Michael Johnson
United States
2025-12-18
Outstanding Service from Inquiry to Delivery
Excellent service experience from inquiry to delivery. Communication: Their sales team responded to our initial inquiry within 90 minutes with a comprehensive quotation including multiple thickness options. Technical questions about cold-rolled vs hot-rolled properties were answered professionally with supporting ASTM A480 documentation and metallurgical analysis. Delivery: We received our 9.5-ton order of 304 cold-rolled plates in just 11 days, 4 days ahead of the promised schedule. Real-time tracking was provided throughout the shipping process with proactive updates. Packaging: Each plate was individually wrapped with PE protective film and separated by wooden strips with corner protectors. Zero damage upon arrival despite cross-country transport. Outstanding supplier. Will definitely continue our partnership for upcoming food processing equipment projects.
用户
James Wilson
United Kingdom
2026-01-02
Excellent Quality 316L Plates for Marine Project
We ordered 12 tons of 316L stainless steel plate (6mm thickness, 1500mm x 3000mm, 2B finish) for our offshore vessel refurbishment project. Quality Assessment: EN 10204 3.1 certificates showed carbon content at 0.022%, well below the 0.03% maximum specified in ASTM A240. We conducted PMI testing on-site and confirmed molybdenum content at 2.4%, within the 2.0-3.0% specification. Surface finish was excellent 2B with no visible pitting or scratches. What impressed us most was the tight thickness tolerance of ±0.12mm, significantly better than the standard ±0.4mm for hot-rolled material. The plates were perfectly flat with no waviness, which reduced our fabrication time by approximately 18%. This is our 4th order this year. Quality has been consistently excellent. Highly recommended for marine and offshore applications.

了解供应商

飞鸿钢铁有限公司

入驻 Sinoali.com 6 年

所在地:China

Product Display

After more than a decade of continuous investment and innovation, Feihong Steel Co., Ltd. has now developed into a leading enterprise in the industry with a complete industrial chain, a wide range of product specifications, prompt supply, excellent product quality, strong industry influence and good social reputation. Currently, our products are mainly sold to the eastern region of China and over 40 countries and regions, such as Southeast Asia, South Asia, West Asia, Eastern Europe, South America, etc. Our stainless steel series products have consistently ranked among the top in China for many years.

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可定制 超低价
$1755 1-49 吨 基准价
$1680 50-99 吨 4.3% 优惠
$1640 ≥100 吨 6.6% 优惠
价格有效期:随行就市

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  • 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$ 1,755.00
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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