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45#碳钢棒——热轧与冷拔 ASTM A29 牌号

山东快马钢铁有限公司
已认证 定制生产厂家 · 7 年 · 中国 China
可定制 超低价
$505 1-49 吨 基准价
$480 50-99 吨 5% 优惠
$470 ≥100 吨 6.9% 优惠
价格有效期:随行就市

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最小起订量: 1 吨

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商品小计 US$ 505.00
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45#碳钢棒技术规范

属性参数描述
产品名称45# 碳钢棒中碳结构钢棒
材料牌号45# / AISI 1045 / S45C / C45国际牌号对应
标准符合性GB/T 699, ASTM A29, JIS G4051符合主要国际标准
碳 (C)0.42-0.50%中碳含量,兼顾强度
锰 (Mn)0.50-0.80%提高淬透性和强度
硅 (Si)0.17-0.37%脱氧剂和强化剂
磷 (P)≤0.035%控制以保证延展性
硫 (S)≤0.035%低硫以保证切削加工性
抗拉强度≥600 MPa最小抗拉强度
屈服强度≥355 MPa最小屈服强度
伸长率≥16%50mm 标距内的延展性
硬度HB 197-217布氏硬度范围(退火态)
直径范围6mm - 300mm可选直径规格
长度3m - 12m 或定制标准长度和定制长度
表面处理黑皮、剥皮、抛光多种表面处理选项
热处理退火、正火、调质可选热处理状态
应用轴类、齿轮、机械零件、紧固件典型应用行业
认证ISO 9001, EN 10204 3.1提供的质量认证
包装钢带捆扎,防水覆盖标准出口包装
MOQ5 tonsMinimum order quantity

45#碳钢棒 - 热轧与冷拔 ASTM A29 牌号

45# 碳钢棒是一种中碳结构钢材料,广泛应用于需要优异机械强度和切削加工性的制造领域。碳含量为 0.42-0.50%,该牌号具有至少 600 MPa 的优异抗拉性能,使其成为机械部件、汽车零件和工业工具的首选。我们的钢厂直供 45# 碳钢棒服务于寻求高应力应用成本效益解决方案的制造商、加工商和工程公司。

45# 碳钢棒供应商

什么是 45# 碳钢棒?

45# 碳钢棒是一种符合 GB/T 699-2015 标准的中碳合金,其特征是成分配比均衡:0.42-0.50% 碳、0.50-0.80% 锰以及受控的硅含量。该材料广泛应用于制造曲轴、齿轮、连杆和结构部件,这些应用需要中等硬度与良好韧性的结合。

45# 碳钢棒技术规格

我们的 45# 碳钢棒在化学成分方面符合 GB/T 699-2015 第 5.2 节,在尺寸公差方面符合 ASTM A29/A29M-20。关键性能包括热轧状态下抗拉强度至少 600 MPa、屈服强度 355 MPa、伸长率至少 16%。可提供直径从 10mm 到 300mm 的圆棒,直线度公差为每米长度 2mm。

45# 碳钢棒制造商

制造工艺与质量控制

我们通过在1150-1200°C温度范围内进行受控热轧生产45#碳钢棒材,随后根据应用要求进行空冷或正火热处理。冷拔变体经过额外加工,以达到Ra 1.6μm的优异表面光洁度和±0.05mm的更严格直径公差。每个生产批次均按照ISO 6892-1:2019标准进行光谱分析和力学测试。

应用与行业用例

这种中碳钢牌号在汽车制造中用于传动轴和悬挂部件,在工业机械中用于液压缸和泵轴,在农业设备中用于犁刀片和旋耕机部件,发挥着关键作用。该材料对热处理的优异响应能力使其表面硬度可达55-60 HRC,同时保持坚韧的芯部,非常适合耐磨应用。

常见问题

最小起订量(MOQ)是多少?

我们45#碳钢棒材的标准最小起订量为每种规格5公吨。对于特殊尺寸或热处理要求,我们可承接10吨起的订单以确保生产效率。对于需要多种直径范围的经销商,可提供混装集装箱装载。

你们提供材质证明书吗?

是的,我们每批货物均随附EN 10204 Type 3.1工厂测试证书,记录符合GB/T 699-2015的化学成分、包括抗拉强度和冲击值在内的力学性能,以及热处理记录。可根据要求安排SGS、BV或TÜV的第三方检验。

45# carbon steel bar China

典型的交货时间是多少?

标准直径 45# 碳钢棒材(20-100mm)库存尺寸自订单确认起 15-20 天内发货。定制直径或热处理变体需要 25-35 天生产周期。紧急需求可提供加急加工服务,10 天交付,需支付额外费用。

能否按定制尺寸切割?

我们提供精密切割服务,长度最长 6 米,公差为 ±1mm。我们的锯切设备可进行直切和 30° 至 90° 角度的斜端切割。当每个规格的总数量超过 20 吨时,批量订单可享受免费切割服务。

获取 45# 碳钢棒材的竞争力报价

立即为您的 45# 碳钢棒材需求申请工厂竞争力价格。我们的技术销售团队在 24 小时内提供详细报价,包括材料规格、加工选项和物流解决方案。订单超过 50 吨或签订 6-12 个月锁定价格的长期供应协议,请联系我们获取批量折扣。

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
Carlos Silva
Brazil
2025-09-11
Superior 45# Bar for Connecting Rod Production
Ordered 20 tons of 45# carbon steel bar in 55mm diameter for automotive connecting rod manufacturing. Material demonstrated excellent response to induction hardening - achieved 60 HRC surface with tough core structure ideal for high-stress applications. Impact testing at -20°C showed 45J minimum, confirming good low-temperature toughness. Supplier accommodated mixed container with 10 tons normalized and 10 tons annealed condition. Volume pricing was highly competitive with 15% discount applied. Lead time was 28 days to Santos port including custom heat treatment processing.
用户
Ahmed Al-Hassan
UAE
2025-09-29
Acceptable Quality with Documentation Delay
Purchased 9 tons of 45# carbon steel bar (60mm diameter) for structural component fabrication. Material quality was acceptable - tensile strength at 605 MPa and yield at 360 MPa met minimum requirements. Initial shipment had incomplete mill test certificates, but supplier resolved issue within 5 days by express courier. Straightness on some bars exceeded 2mm tolerance but within usable range for our application. Technical specifications matched GB/T 699-2015 standards after verification. Supplier provided 8% discount on next order as compensation for documentation delay.
用户
Wei Chen
Singapore
2025-10-17
Solid Quality for General Machining Applications
Ordered 7 tons of 45# carbon steel bar in 30mm and 45mm diameters for CNC machining projects. Machinability was good with carbide tooling - achieved surface finish of 3.2μm after turning operations. Chemical composition consistent across batch with carbon at 0.44%. Delivery took 26 days, slightly longer than quoted 20-day timeline due to customs clearance delays. SGS third-party inspection arranged smoothly. Price point competitive for medium-carbon grade material in Southeast Asian market.
用户
Robert Brown
United Kingdom
2025-11-04
Reliable 45# Steel for Agricultural Machinery
This is our third consecutive order - 10 tons of 45# carbon steel bar for plow blade and tiller component manufacturing. Normalized heat treatment condition provided consistent hardness of 22-24 HRC, ideal for our forming processes. Custom cutting service at 2.5m lengths with beveled ends at 45° saved significant machining time. Technical sales team responded within 18 hours with detailed quotation including freight options. Material performed excellently in field testing - wear resistance met our 5-year durability requirements.
用户
William Taylor
Australia
2025-11-21
Premium Cold-Drawn Bars for Pump Shafts
Sourced 6 tons of cold-drawn 45# carbon steel bar (35mm diameter) for marine pump shaft applications. Surface finish was exceptional at Ra 1.6μm with diameter tolerance held to ±0.04mm throughout entire batch. Compared quotes from 5 Asian suppliers and this offer provided best combination of quality and lead time. Material underwent spectroscopic analysis per ISO standards - all elements within specification. Elongation tested at 18% in our lab, confirming good ductility. Shipment arrived in 22 days to Sydney port.
用户
Hans Mueller
Germany
2025-12-08
Good Value 45# Bar for Automotive Components
Ordered 15 tons of hot-rolled 45# carbon steel bar in various diameters (40mm-100mm) for transmission shaft production. Pricing was competitive compared to European suppliers - approximately 12% lower for equivalent ASTM A29 grade material. Mechanical properties met specifications with yield strength at 370 MPa. Only minor issue was packaging - some bars had slight surface rust from ocean shipping, but easily removed with wire brushing. Would prefer better moisture protection for future orders. Overall good value for high-volume manufacturing.
用户
James Wilson
United Kingdom
2025-12-23
Outstanding Quality for Hydraulic Cylinder Shafts
Purchased 8 tons of 45# carbon steel bar (50mm and 65mm diameters) for hydraulic cylinder manufacturing. Material certificates showed manganese at 0.68% and silicon properly controlled. Straightness tolerance was excellent at 1.5mm per meter, better than the 2mm standard. Cut-to-length service at 3.2m was precise within ±0.5mm. Technical support team provided detailed heat treatment recommendations for our specific application. Delivered 2 days ahead of the promised 20-day schedule.
用户
Michael Johnson
United States
2026-01-07
Excellent 45# Steel Bar for Gear Manufacturing
Ordered 12 tons of 45# carbon steel bar in 80mm diameter for our gear production line. Chemical composition verified at 0.46% carbon, perfectly within GB/T 699-2015 specs. Tensile strength tested at 615 MPa, exceeding the 600 MPa minimum requirement. Surface finish on cold-drawn bars was outstanding at Ra 1.4μm. Heat treatment response was exceptional - achieved 58 HRC surface hardness while maintaining core toughness. Delivery completed in 18 days with full EN 10204 3.1 certificates. This is our fourth order this year.

了解供应商

山东快马钢铁有限公司

入驻 Sinoali.com 7 年

所在地:China

Frequently Asked Questions

可定制 超低价
$505 1-49 吨 基准价
$480 50-99 吨 5% 优惠
$470 ≥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$ 505.00
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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