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不锈钢棒材 - AISI 304/316，精密研磨及定尺切割
快马钢铁有限公司
已认证
定制生产厂家
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7 年
·
China
China
可定制
超低价
$1285
1-49 吨
基准价
$1230
50-99 吨
4.3% 优惠
$1200
≥100 吨
6.6% 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
316不锈钢圆棒
$1600
1 吨 （最小起订量）
不锈钢棒
$1200 - $1285
1 吨 （最小起订量）
321不锈钢管
$1495 - $1600
1 吨 （最小起订量）
不锈钢棒
$2300
1 吨 （最小起订量）
302不锈钢棒
$2005 - $2145
1 吨 （最小起订量）
303不锈钢棒
$2570 - $2750
1 吨 （最小起订量）
20毫米不锈钢棒
$1200 - $1285
1 吨 （最小起订量）
32不锈钢圆钢
$1900
1 吨 （最小起订量）
8直径不锈钢圆钢
$1830
1 吨 （最小起订量）
2英寸不锈钢圆钢
$1250
1 吨 （最小起订量）
不锈钢棒
$3980
1 吨 （最小起订量）
30毫米不锈钢棒
$2005 - $2145
1 吨 （最小起订量）
产品详情
不锈钢棒材技术规范
| 属性 | 参数 | 描述 |
|---|---|---|
| 产品名称 | 不锈钢棒材 | 用于工业应用的高性能奥氏体钢棒 |
| 材料牌号 | 304 / 316 / 316L / 310S / 410 / 420 | 多种牌号选择，适用于不同应用 |
| 标准合规 | ASTM A276, ASTM A479, EN 10088-3, JIS G4303 | 符合主要国际标准 |
| 碳含量 (C) | ≤0.08% (304) / ≤0.03% (316L) | 低碳含量，改善焊接性能 |
| 铬 (Cr) | 16.0-26.0% | 提供耐腐蚀性 |
| 镍 (Ni) | 8.0-22.0% | 增强延展性和韧性 |
| 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 (304/316) / ≥655 MPa (410) | 依据 ASTM A276 的最低抗拉强度 |
| 屈服强度 | ≥205 MPa (304/316) / ≥450 MPa (410) | 最低屈服强度 |
| 延伸率 | ≥40% (奥氏体) / ≥20% (马氏体) | 50mm 标距内的延展性 |
| 硬度 | ≤217 HBW (304/316) / ≤255 HBW (410) | 最大布氏硬度 |
| 直径范围 | 3mm - 500mm | 可选直径规格，包括定制尺寸 |
| 长度 | 1m - 6m 或定制 | 提供标准长度和定制长度 |
| 表面处理 | 黑皮、光亮、抛光、剥皮、磨光 | 多种表面处理选项 |
| 制造工艺 | 热轧、冷拔、锻造、剥皮 | 提供多种生产方法 |
| 应用 | 紧固件、轴类、阀门、船舶、化学加工 | 典型应用行业 |
| 认证 | EN 10204 3.1, ISO 9001, ASTM, PED | 提供质量认证 |
| 包装 | 钢带捆扎，木箱，塑料端盖 | 标准出口包装 |
| MOQ | 500 kg | 最小起订量 |
不锈钢棒材 - AISI 304/316，精密研磨及定尺切割
不锈钢棒在制造、建筑和精密工程应用中发挥着关键作用，这些应用对卓越的耐腐蚀性和机械强度有严格要求。提供 AISI 304、316、316L 和 321 等牌号，这些精密工程部件广泛应用于化学加工设备、船舶五金、食品生产机械和建筑结构。我们的钢厂直供不锈钢棒提供具有工厂竞争力的价格以及认证的材料合规性，使其成为需要在严苛环境中可靠性能的 OEM 制造商、加工车间和工业维护团队的首选。
什么是不锈钢棒？
不锈钢棒是由铬镍合金钢制成的实心圆柱形棒材，通过热轧或冷拔工艺生产，以达到精确的尺寸公差。这些部件由于其铬含量（最低 10.5%）而对腐蚀性环境表现出卓越的耐受性，铬形成保护基体金属的钝化氧化层。提供圆形、方形和六角形型材，不锈钢棒通常用于既需要结构完整性又需要美观外观的应用。
不锈钢棒技术规格
我们的精密研磨不锈钢棒符合 ASTM A276/A276M-17 第 6 节关于尺寸公差和表面光洁度的要求。304 牌号棒材含 18-20% 铬和 8-10.5% 镍，碳含量限制在最高 0.08%，根据 ASTM 规范提供最低 515 MPa 的抗拉强度。316 牌号变体含有 2-3% 钼，以增强在氯化物环境中的抗点蚀能力，而 316L 的碳含量降低至最高 0.03%，具有更优异的焊接特性。直径范围从 3mm 到 300mm，长度选项可达 6 米，按 h9、h11 公差等级或轧制状态制造。
材料牌号对比
304 牌号是库存最广泛的奥氏体不锈钢，为厨具设备、建筑装饰和紧固件生产等通用应用提供最佳成本效益。对于海洋环境和化学加工，316 牌号通过添加钼提供更优异的抗点蚀性能，符合 ASTM A240 第 5.2 节对化学成分的要求。321 牌号加入钛稳定化处理（钛含量至少为碳含量的 5 倍），以防止在 427°C 至 816°C 的高温服役期间发生晶间腐蚀，根据 AMS 5510 规范，非常适合飞机排气系统和热处理设备。
制造工艺与表面处理
热轧不锈钢棒材在 1010-1120°C 下进行退火，随后进行酸洗和钝化，以达到 ASTM A380 标准规定的轧制表面状态。冷拔棒材通过硬质合金模具进行额外加工，以达到 ±0.05mm 的精密公差，表面粗糙度值达到 Ra 0.8μm 或更优。无心磨削加工生产的棒材达到 h6 公差等级，直线度偏差限制在每米长度 0.5mm 以内，这对于自动加工操作和紧公差装配要求至关重要。
质量认证与检测
每个生产批次均通过光电直读光谱法进行化学成分分析，验证是否符合 EN 10088-2:2014 成分限值。依据 ASTM A370 进行的力学测试确认抗拉强度、0.2% 偏移屈服强度和延伸率百分比满足各牌号特定要求。我们提供工厂测试证书（MTC 3.1），记录化学成分分析、力学性能、热处理参数和尺寸检验结果。使用 X 射线荧光分析仪进行的材料正品鉴定（PMI）测试确保整个供应链中的材料可追溯性。
跨行业应用
在食品加工设施中，由 316L 牌号制造的不锈钢棒材符合 FDA 21 CFR 177.2600 对直接食品接触表面的要求，常用于搅拌轴、输送机部件和卫生管道系统。海洋应用利用 316 合金卓越的耐氯化物腐蚀性能，用于暴露于海水环境的螺旋桨轴、索具五金件和甲板配件。制药洁净室指定电解抛光的 316L 棒材，表面粗糙度低于 Ra 0.4μm，以最大限度地减少细菌附着并促进符合 cGMP 标准的清洁验证方案。
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种规格 500 公斤，但对于常见直径（10mm-50mm）的精密研磨棒材，我们可以承接更小数量，并收取适用的小批量附加费。定制直径要求可能需要 1000 公斤的最低起订量，以证明模具设置成本的合理性。
你们提供材料测试证书吗？
是的，我们每次发货都随附 EN 10204 Type 3.1 工厂测试证书，记录化学成分、力学性能、热处理记录和尺寸检验数据。证书包含炉号可追溯性以及符合 ISO 9001:2015 要求的授权质量经理签名。
典型交货时间是多少？
304 和 316 牌号的库存尺寸在订单确认后 5-7 个工作日内发货。定制长度、h6 公差的精密磨削，或 321 或 2205 双相钢等特种牌号，根据当前钢厂排产和订单量，需要 3-4 周的生产周期。
你们可以按定制尺寸切割吗？
我们提供使用硬质合金锯片的精密切割服务，可实现 ±1mm 的切割长度公差，且毛刺极少。100mm 至 6000mm 的长度均可轻松实现，切割端面在包装前会去毛刺并清洁。数量超过 100 件的批量订单可享受单件切割价格优惠。
获取不锈钢圆钢的竞争力报价
我们的技术销售团队提供全面支持，包括材料选择指导、应用工程咨询和价值分析，以优化您的零部件规格。我们备有常用牌号和尺寸的大量库存以实现快速交付，同时我们的钢厂合作伙伴关系可为大批量合同和特种合金需求提供有竞争力的价格。
- 通过电话、电子邮件和在线聊天提供 24/7 客户支持
- 免费样品用于质量评估——每个规格最多 3 件
- 批量订单有竞争力的价格，设有批量折扣层级
- 来自冶金工程师的专业技术咨询
- 合格客户可享受灵活付款条件
- 全球运输安排，提供货运代理协助
立即联系我们，24小时内获取免费报价！提交您的规格要求，包括牌号、直径、长度、数量和交货要求，即可获得即时报价。
评分与评价
John Smith
United States
2025-07-17
Acceptable Quality with Delivery Issues Resolved
Decent product overall on our 1.5-ton order of 304 stainless steel rods (22mm diameter, hot-rolled, 4-meter lengths) for general fabrication work. Material quality was acceptable with proper ASTM A276 compliance and valid MTC 3.1 certificates showing chemical composition within specification limits. Initial delivery had problems - shipment arrived 8 days late due to logistics coordination issues, and 12 pieces (approximately 4% of order) had minor surface rust staining from moisture exposure during transit. Contacted supplier immediately and they responded professionally, arranging pickup of affected pieces within 3 days and delivering replacements plus 10% extra quantity as compensation at no charge. Replacement pieces were properly packaged with VCI protection. Surface finish on acceptable pieces was standard mill finish, adequate for our non-critical applications though requiring some cleanup before welding. Straightness varied from 0.5mm to 1.2mm per meter - usable but not precision grade. Would suggest improvements in packaging moisture protection for ocean shipments and better freight forwarder selection. Appreciated their responsive problem-solving approach. Acceptable for general-purpose fabrication when price is primary consideration, though premium applications might require tighter specifications.
Robert Brown
United Kingdom
2025-08-26
Excellent 316 Rods for Chemical Processing Equipment
We ordered 3.4 tons of 316 stainless steel rods (various diameters 15mm to 40mm, precision ground h9 tolerance) for our chemical reactor vessel project handling chlorinated solvents. Material certificates documented molybdenum content at 2.6%, chromium 17.2%, nickel 11.8% - ideal composition for our corrosive environment per NACE MR0175 guidelines. Conducted our own verification testing: positive material identification via XRF confirmed grade accuracy, pitting resistance testing in 6% FeCl3 solution showed excellent performance with PREN calculated at 25.5. Surface finish was outstanding at Ra 0.5μm with uniform grinding pattern, no heat-affected discoloration. Dimensional accuracy exceeded expectations - measured variance of only ±0.02mm on 40mm diameter rods across 85-piece sample. Supplier provided comprehensive technical documentation including heat treatment records (solution annealed at 1065°C, water quenched) and grain size analysis (ASTM E112 grain size 6-7). Their metallurgical expertise helped us optimize material selection versus 316L for our welding-intensive application. Exceptional quality for critical process equipment fabrication.
Carlos Silva
Brazil
2025-09-15
Decent 304 Rods with Good Technical Support
Ordered 2.8 tons of 304 stainless steel rods (14mm and 20mm diameters, cold-drawn, 2-meter lengths) for our fastener manufacturing operation. Compared pricing from 5 South American and Asian suppliers - their quote was 8% below regional suppliers with acceptable lead time of 21 days. Material quality met ASTM A276 requirements with proper chemical composition (18.2% Cr, 8.4% Ni, 0.06% C per certificates). Mechanical properties were consistent: tensile strength 580-595 MPa, yield strength 290-310 MPa across test samples. Minor concern with surface finish variation - approximately 15% of pieces showed slight die marks from drawing process, though within tolerance and not affecting our machining operations. Their technical team was helpful in resolving our questions about work hardening characteristics for cold heading applications, providing detailed stress-strain curves. Delivery was on schedule with good packaging in steel-strapped bundles. Overall good value proposition for industrial manufacturing. 4 stars because surface consistency could be better, but performance and support justify continued business relationship.
Ahmed Al-Hassan
UAE
2025-10-01
Perfect 304 Rods for Architectural Railings
This is our 3rd order for architectural-grade 304 stainless steel rods over 8 months, totaling 5.6 tons for various high-rise projects in Dubai. Latest shipment was 2.1 tons (25mm diameter, bright annealed finish, 6-meter lengths) for exterior railing systems. Surface finish is consistently mirror-bright with Ra values below 0.4μm, perfect for our aesthetic requirements in luxury developments. No surface defects, pitting, or discoloration across entire order. Straightness is exceptional at 0.2mm per meter, critical for our installation tolerances in architectural applications. Their quality control process includes individual piece inspection with documented measurements, giving us confidence for direct installation without additional processing. Corrosion resistance testing in our harsh coastal climate (high humidity, salt exposure) has been excellent over 12+ months on previous installations. Supplier understands architectural specifications and provides proper handling to maintain pristine surface condition during shipping. Delivery coordination with our project schedules has been reliable. Outstanding partner for high-visibility architectural metalwork.
Wei Chen
Singapore
2025-10-19
Solid Quality 316L Precision Ground Rods
Good experience with 800kg order of 316L precision ground rods (10mm, 12mm, 16mm diameters, h9 tolerance, 1-meter cut lengths). We compared quotes from 4 Asian suppliers and their pricing was competitive at mid-range level while offering better tolerances than the cheapest options. Dimensional inspection of sample pieces showed diameter consistency of ±0.03mm, surface roughness Ra 0.7μm measured with profilometer. All pieces came with individual diameter measurements marked on labels, helpful for our quality control process. Packaging could be improved - some bundles had loose wrapping that allowed minor surface contact marks, though nothing affecting functionality. Communication was professional with technical questions answered within 12 hours. Lead time was 14 days, 2 days longer than initially quoted but they proactively informed us of the delay. Overall, reliable supplier for precision applications. 4 stars because packaging needs enhancement and delivery timing could be tighter, but quality and service are dependable for our distribution business.
Chris Martin
Canada
2025-11-05
Premium 321 Rods for High-Temperature Applications
We ordered 1.2 tons of grade 321 stainless steel rods (18mm diameter, hot-rolled condition) for our client's thermal processing equipment operating at 650°C continuous service. Material certificates confirmed titanium content at 0.42% (5.2x carbon content), meeting AMS 5510 stabilization requirements perfectly. Conducted intergranular corrosion testing per ASTM A262 Practice E and passed with zero grain boundary attack after sensitization. Tensile testing at elevated temperature (538°C) showed yield strength of 185 MPa, exceeding our design requirements. Surface condition was clean mill finish with complete scale removal and passivation per ASTM A380. Supplier provided excellent technical consultation comparing 321 vs 347 grades for our specific temperature cycling application. Delivery was 19 days, exactly as promised. This specialty grade is difficult to source in small quantities, but they handled our order professionally without minimum quantity issues. Highly recommended for high-temperature engineering applications.
William Taylor
Australia
2025-11-22
Reliable 316 Rods for Propeller Shaft Fabrication
Long-term partner for marine-grade stainless steel rods. This is our 7th order over the past 18 months for various vessel projects. Consistency has been exceptional - every shipment of 316 rods (diameters ranging 30mm to 80mm) has met identical quality standards with chemical composition variance less than 0.5% between heats. Their inventory management is impressive, maintaining stock of larger diameters (50mm+) that other suppliers require 6-week lead times to source. Recent 4.5-ton order for propeller shaft blanks (65mm diameter, centerless ground) arrived with perfect dimensional accuracy - measured 64.95mm to 65.02mm across entire lot. Pitting resistance testing in artificial seawater confirmed PREN value of 26, ideal for our subtropical marine environment. Their understanding of marine engineering requirements and proactive communication about mill production schedules helps us plan projects confidently. Looking forward to continued partnership as we expand our fleet maintenance contracts.
Hans Mueller
Germany
2025-12-08
Good Value 304 Rods for Automated Machining
Good value for the price on our 3.2-ton order of 304 cold-drawn rods (20mm diameter, 3-meter lengths, h11 tolerance). We compared quotes from 6 suppliers across Europe and Asia, and their price was 12% lower than European mills while maintaining acceptable quality for our CNC machining operations. Material met EN 10088-2:2014 specifications with proper MTC 3.1 documentation. Minor issue with one bundle having slight surface scratches (approximately 0.1mm depth on 8 pieces), but supplier immediately offered 5% credit without requiring return. Straightness was adequate at 0.7mm per meter, suitable for our bar feeders though not as perfect as premium Swiss material. Overall, excellent choice for high-volume production where cost control matters. 4 stars because surface finish wasn't quite as pristine as top-tier suppliers, but the value proposition and responsive customer service make this a solid partnership.
Michael Johnson
United States
2025-12-23
Outstanding Service and Technical Support
Excellent service experience from inquiry to delivery for our 1.8-ton order of 304 stainless steel rods (12mm and 16mm diameters, cut to 500mm lengths). Communication was exceptional - their metallurgical engineer provided detailed material selection guidance within 3 hours of our initial inquiry, comparing 304 vs 316 for our food processing application. Technical documentation included complete chemical analysis, mechanical test results, and FDA compliance confirmation per 21 CFR 177.2600. Delivery was impressive - shipped in 6 days with real-time tracking updates. Packaging was professional grade with each bundle individually wrapped in VCI paper, wooden crate construction prevented any transit damage. All 360 pieces arrived with perfect cut tolerances of ±0.5mm and deburred ends ready for immediate machining. Their proactive communication and technical expertise made this our smoothest procurement experience this year.
James Wilson
United Kingdom
2026-01-07
Excellent Quality 316L Rods for Marine Hardware
We ordered 2.5 tons of 316L stainless steel rods (25mm diameter, precision ground to h9 tolerance) for our marine deck fitting project. Material certificates showed carbon content at 0.025%, molybdenum at 2.4%, fully compliant with ASTM A276. We conducted salt spray testing per ASTM B117 and results exceeded 1000 hours without corrosion. Surface finish was exceptional with Ra 0.6μm, no visible grinding marks. Straightness deviation measured 0.3mm per meter, well within our requirements. Delivered in 11 days, 4 days ahead of the quoted lead time. This is our 4th order from this supplier. Quality has been consistently excellent across all shipments. Highly recommended for critical marine applications requiring superior corrosion resistance.
了解供应商
可定制
超低价
$1285
1-49 吨
基准价
$1230
50-99 吨
4.3% 优惠
$1200
≥100 吨
6.6% 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
