面向进口商、经销商与项目买家的中国钢材采购服务

304不锈钢板 - ASTM A240 304级 冷轧与热轧可选

快马钢铁有限公司
已认证 定制生产厂家 · 7 年 · 中国 China
可定制 超低价
$2100 1-49 吨 基准价
$2010 50-99 吨 4.3% 优惠
$1960 ≥100 吨 6.7% 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$ 2,100.00
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

产品详情

304不锈钢板技术规格

属性参数描述
产品名称304 Stainless Steel Sheet奥氏体铬镍不锈钢
材料牌号304 / EN 1.4301 / UNS S30400 / JIS SUS304国际牌号对应
标准符合性ASTM A240, EN 10088-2, JIS G4304, GB/T 3280符合主要国际标准
碳含量 (C)≤0.08%用于强度和焊接性的碳含量
铬 (Cr)18.0-20.0%提供优异的耐腐蚀性
镍 (Ni)8.0-10.5%增强延展性和成形性
锰 (Mn)≤2.0%提高强度 and 加工性
硅 (Si)≤1.0%脱氧剂和强化剂
抗拉强度≥515 MPa根据 ASTM A240 的最小抗拉强度
屈服强度≥205 MPa最小屈服强度(0.2% 偏移)
伸长率≥40%50mm 标距内的延展性
硬度≤201 HBW / ≤92 HRB最大硬度值
厚度范围0.3 - 100 mm可选厚度
宽度范围1000 - 2000 mm标准及定制宽度
长度范围2000 - 6000 mm 或定制标准及定制长度
表面处理2B, BA, No.4, HL, Mirror, Brushed多种表面处理选项
应用食品加工、建筑、汽车、化工设备典型应用行业
认证EN 10204 3.1, ISO 9001, PED, ASME提供的质量认证
包装木托盘、防水纸、钢带标准出口包装
MOQ1 ton最小起订量

304不锈钢板 - ASTM A240 304级 冷轧与热轧可选

304不锈钢板是全球工业应用中规定最广泛的奥氏体铬镍合金。这种多功能材料兼具优异的耐腐蚀性和卓越的成形性,使其成为食品加工设备、建筑面板、厨房电器和化学加工罐的首选。凭借18%铬和8%镍的均衡成分,304板材在从低温到870°C的温度范围内提供具有成本效益的性能,服务于那些需要可靠材料性能但又不愿承担特种牌号高昂成本的制造商。

什么是304不锈钢板?

304不锈钢板是一种奥氏体铬镍合金,由ASTM A240/A240M标准定义,含18.0-20.0%铬、8.0-10.5%镍,碳含量最高0.08%。这种非磁性材料在典型工作温度下保持其面心立方晶体结构,提供一致的机械性能以及对大气腐蚀、食品酸和大多数有机化学品的卓越抵抗力。可提供冷轧(2B、BA、No.4表面)和热轧(No.1表面)状态,板材形式可通过弯曲、深冲和焊接操作进行加工。

304不锈钢板技术规格

按ASTM A240要求制造的304牌号板材在退火状态下表现出最低515 MPa的抗拉强度和205 MPa的屈服强度。该材料在50mm标距长度内表现出最低40%的伸长率,确保复杂成形操作具有足够的延展性。冷轧板的标准厚度范围为0.4mm至6.0mm,热轧板为3.0mm至75mm,宽度可达2000mm,长度可达6000mm。根据ASTM规范,化学成分限制包括锰最高2.0%、硅最高0.75%、磷最高0.045%和硫最高0.030%。

304 板材的表面处理选项

冷轧表面

2B 表面代表冷轧 304 板材的标准轧制表面,通过冷轧后经退火和酸洗,再用抛光辊进行轻度轧制,以获得光滑、中等反光的表面,适用于大多数工业应用。BA(光亮退火)表面在最终冷轧后经过可控气氛退火处理,形成高度反光的镜面状表面,非常适合装饰性建筑面板和食品接触表面。No.4 表面由 120-150 目磨料机械抛光而成,产生拉丝外观,通常用于厨房设备和电梯面板。

热轧表面特征

热轧 304 板材上的 No.1 表面因高温轧制操作而呈现粗糙、带氧化皮的表面,通常用于表面外观次于结构性能的应用场合。该表面在焊接或涂装操作前需要通过酸洗或喷丸除鳞。热轧板材应用于结构部件、罐体制造,以及需要较厚规格材料且后续机加工可去除表面不规则性的场合。

304 不锈钢板材供应商

耐腐蚀性能

304不锈钢板在农村、城市和轻工业环境中表现出卓越的耐大气腐蚀性能,其点蚀当量数(PREN)约为18。在含氧环境中,钝化铬氧化膜被划伤后会自发重建,提供自修复保护。该材料在与食品、饮料、药品和温和化学溶液接触时性能依然优异。然而,温度超过60°C的含氯化物环境可能引发点蚀,需要升级至316L级别以用于海洋或化学加工应用。

加工与焊接特性

成形与弯曲性能

冷轧304板材具有卓越的深冲压能力,极限拉延比(LDR)为2.2-2.4,可用于生产复杂的厨房水槽、炊具和汽车装饰部件。该材料在成形过程中发生加工硬化,在严重成形区域,抗拉强度从515 MPa增加至超过1000 MPa。对于平行于轧制方向的90度弯曲,最小弯曲半径通常等于材料厚度的1.0倍;对于垂直于晶粒方向的弯曲,则增加至厚度的1.5倍。

焊接工艺

304不锈钢板可通过GTAW(TIG)、GMAW(MIG)和电阻焊方法进行焊接,无需预热或焊后热处理。氩基保护气体防止熔合过程中的氧化,保持焊接区域的耐腐蚀性。碳含量低于0.08%可最大程度减少焊接热循环过程中的碳化铬析出,但在425-815°C敏化范围内长时间暴露可能降低晶间耐腐蚀性。对于涉及焊接的关键应用,含碳量最高0.03%的304L低碳变体可提供增强的焊接区域性能。

304 不锈钢板批发

跨行业应用

食品加工设施指定使用 304 板材用于混合罐、输送机和卫生管道系统,这些场合必须易于清洁且具有抗菌性能。建筑应用包括建筑幕墙、柱包板和内墙面板,充分利用该材料的美观性和低维护要求。化工加工厂将 304 板材用于储存温和酸、碱性溶液和有机溶剂的储罐,工作温度低于 100°C。汽车行业将冷轧 304 用于排气系统部件、装饰线条和油箱构造,这些场合中等耐腐蚀性即可满足需求。

304 不锈钢板 中国

常见问题

最小起订量(MOQ)是多少?

304 不锈钢板的标准最小起订量为每规格 1 公吨,但我们也可接受较小数量用于样品评估或原型开发。满足 1 吨最低要求的混合厚度订单使客户能够高效备货多种规格。超过 10 吨且单一交货目的地的订单适用批量定价。

你们提供材质证明书吗?

每批货物均包含 EN 10204 Type 3.1 工厂测试证书,记录光谱发射光谱法化学成分、拉伸测试力学性能以及炉号可追溯性。证书根据要求验证符合 ASTM A240、EN 10088-2 或 JIS G4305 规范。可为需要额外验证的客户安排第三方检验服务。

典型交货时间是多少?

常备常见厚度(0.8mm、1.0mm、1.5mm、2.0mm、3.0mm)的 304 板材,自订单确认起 7-10 个工作日内发货。定制厚度、宽度或表面处理要求需要 4-6 周的钢厂生产交货期。紧急项目可提供加急处理,标准定价加收 15% 附加费。

你们能按定制尺寸切割吗?

我们的精密剪切设备可将 304 板材切割至客户指定尺寸,长度和宽度公差为 ±1.0mm。激光切割服务可提供复杂轮廓切割,定位精度达 ±0.2mm,适用于需要孔、缺口或不规则形状的部件。CNC 等离子切割可处理 6.0mm 以上的较厚规格,此时激光功率受限。所有切割服务均包含去毛刺以去除锐边。

获取 304 不锈钢板材的竞争力报价

我们的钢厂直采消除了经销商加价,为任何规模的项目提供具有工厂竞争力的 304 不锈钢板材价格。无论您需要用于食品设备的 2B 表面、用于建筑面板的 BA 表面,还是用于装饰应用的 No.4 拉丝表面,我们的技术团队都会提供材料选择指导,确保最佳性能和成本效益。立即申请您的定制报价,体验与致力于质量、精度和快速响应的供应商合作的优势。

  • 提供 24/7 客户支持
  • 免费样品供质量评估
  • 批量订单具有竞争力的价格
  • 专业的技术咨询

立即联系我们,24 小时内获取免费报价!

评分与评价

4.4
基于 9 条评价
5 5
4 3
3 1
2 0
1 0
用户
Chris Martin
Canada
2025-09-26
Acceptable Quality with Minor Delivery Issues Resolved
Purchased 4.1 tons of 304 cold rolled sheet, 2.0mm thickness, No.4 brushed finish for elevator panel project in Toronto. Material quality was satisfactory with tensile strength at 528 MPa and proper grain structure. Initial shipment had incorrect width specification (1219mm instead of ordered 1500mm), but supplier quickly arranged replacement at no additional cost. Corrected material arrived within 12 days of issue notification. Chemical composition met ASTM A240 requirements. Customer service was responsive in resolving the error. Would consider ordering again for non-critical timeline projects.
用户
Carlos Silva
Brazil
2025-10-13
Superior 304 BA Finish for Pharmaceutical Equipment
Acquired 2.9 tons of 304 stainless steel sheet with BA finish, 1.5mm thickness, 1500mm width for pharmaceutical mixing tank liners. Surface roughness measured at Ra 0.3μm, meeting our stringent cleanroom requirements. Carbon content certified at 0.054%, minimizing carbide precipitation risk during sanitary welding. Supplier provided detailed mill test reports with heat number traceability. Material arrived in São Paulo within 28 days including customs processing. Technical team assisted with welding procedure recommendations for our specific application. Repeat customer, sixth order in two years.
用户
William Taylor
Australia
2025-10-25
Solid Value 304 Sheets for Food Processing Conveyors
Ordered 5.8 tons of 304 sheet, 1.0mm thickness, 2B finish for conveyor system upgrade in meat processing facility. Material met Australian food safety standards with proper surface finish for easy cleaning. Phosphorus content at 0.038% and silicon at 0.62%, well within specification limits. Forming trials showed good ductility without edge cracking. Lead time was 25 days to Melbourne, slightly longer than expected but communicated clearly. Pricing was competitive though not the lowest bid. Small packaging damage on one bundle but material undamaged. Overall good experience.
用户
Ahmed Al-Hassan
UAE
2025-11-06
Perfect Hot Rolled 304 Plates for Structural Framework
Purchased 12 tons of hot rolled 304 stainless steel plate, 6mm and 8mm thicknesses, No.1 finish for building structural supports in Dubai. Compared quotes from five suppliers across Asia and Europe before selecting based on certification quality and lead time. Yield strength tested at 218 MPa, exceeding 205 MPa minimum requirement. Surface descaling performed smoothly before welding operations. Supplier arranged third-party SGS inspection at mill before shipment. Material reached Dubai in 21 days including sea freight. Technical support team answered all our specification questions promptly.
用户
Robert Brown
United Kingdom
2025-11-18
Reliable 304 Coils for Automotive Trim Production
Sourced 6.2 tons of 304 cold rolled sheet in coil form, 0.8mm thickness, 2B finish for automotive interior trim stamping. Material demonstrated consistent hardness across coil length, averaging 170 HV. Elongation tested at 43% in 50mm gauge length, providing good formability for our complex part geometries. ASTM A240 compliance verified through mill certificates. Price point was 8% lower than our regular UK distributor. Delivery required 17 days due to customs clearance delays, not supplier's fault. Would order again for cost-sensitive projects.
用户
Wei Chen
Singapore
2025-11-30
Premium 304 Material for Offshore Equipment Upgrade
Ordered 4.7 tons of 304 stainless steel sheet in 1.5mm and 2.5mm thicknesses, 2B finish for our shipboard galley equipment refurbishment contract. Supplier provided detailed technical consultation on material selection versus 316L for our saltwater exposure conditions. Test certificates documented PREN value at 18.2, suitable for our indoor application environment. Forming operations on press brake achieved minimum bend radius of 1.5x thickness without cracking. Material arrived in Singapore port within 13 days with proper export documentation. Third order from this supplier.
用户
Hans Mueller
Germany
2025-12-08
Good Quality 304 Sheets for Chemical Storage Tanks
Purchased 8.5 tons of 304 cold rolled sheet, 3.0mm thickness, 2B finish for mild acid storage tank fabrication. Chemical composition analysis showed manganese at 1.7% and sulfur at 0.024%, compliant with EN 10088-2 standards. Tensile strength tested at 547 MPa, above minimum 515 MPa requirement. Welding with GTAW method produced clean joints without carbide precipitation. Delivery took 19 days, slightly longer than quoted 14 days but acceptable. Price was competitive compared to three other European suppliers. Minor surface scratches on two sheets but within tolerance for our application.
用户
James Wilson
United Kingdom
2025-12-23
Outstanding Service and Quick Delivery for Architectural Project
We needed 5 tons of 304 sheet with No.4 brushed finish, 2.0mm thickness for an urgent facade renovation project in London. Supplier provided free samples within 48 hours for client approval. Final order included custom cutting to 800mm x 2400mm panels with ±0.8mm tolerance. Material certificates confirmed carbon content at 0.062%, preventing sensitization concerns during welding. Technical team helped us select appropriate bend radius for our column covers. Shipped in 11 days with careful packaging. Highly professional communication throughout.
用户
Michael Johnson
United States
2026-01-07
Excellent 304 BA Finish Sheets for Commercial Kitchen
Ordered 3.2 tons of 304 stainless steel sheet in 1.2mm thickness, BA finish, 1220mm width for our commercial kitchen equipment production line. Material arrived with EN 10204 3.1 certificates showing chromium at 18.4% and nickel at 8.6%, perfectly within ASTM A240 specs. The bright annealed surface was flawless with mirror-like reflectivity, no fingerprints or scratches. Deep drawing performance exceeded expectations with LDR of 2.3 on our sink forming dies. Delivered in 9 days from order confirmation. This is our fourth purchase this year.

了解供应商

快马钢铁有限公司

入驻 Sinoali.com 7 年

所在地:China

可定制 超低价
$2100 1-49 吨 基准价
$2010 50-99 吨 4.3% 优惠
$1960 ≥100 吨 6.7% 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$ 2,100.00
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

店铺推荐

更多产品 
 发送询价
邮件
邮件
[email protected]
复制邮箱
电话
电话
+86 133 7058 6666
复制号码