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45#钢坯 - 用于锻造和轧制的热轧碳钢钢坯

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
$465 1-49 吨 基准价
$445 50-99 吨 4.3% 优惠
$435 ≥100 吨 6.5% 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$ 465.00
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付款与交货
交期:
随报价一并确认
包装:
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产品详情

45#钢坯技术规范

属性参数描述
产品名称45# 钢坯用于锻造和机加工的中碳结构钢坯
材料牌号45# / AISI 1045 / C45 / S45C国际等效牌号
标准符合性GB/T 699, ASTM A29, EN 10083, JIS G4051符合主要国际标准
碳 (C)0.42-0.50%中碳含量,兼顾强度与延展性
锰 (Mn)0.50-0.80%提高淬透性和抗拉强度
硅 (Si)0.17-0.37%脱氧剂和强化剂
磷 (P)≤0.035%受控以改善韧性
硫 (S)≤0.035%低硫以提高切削加工性
抗拉强度≥600 MPa退火状态下的最低抗拉强度
屈服强度≥355 MPa最低屈服强度
伸长率≥16%50mm 标距下的延展性
硬度170-217 HBW退火状态下的布氏硬度
横截面100×100mm - 300×400mm可提供方形和矩形钢坯尺寸
长度3m - 12m 或定制适用于不同应用的标准和定制长度
应用轴类、齿轮、螺栓、机械零件、锻件原料广泛用于机械工程和制造业
热处理正火、淬火与回火可进行热处理以增强性能
认证ISO 9001, EN 10204 3.1, 钢厂测试证书提供质量认证
MOQ25 吨最小起订量

45# 钢坯 - 用于锻造和轧制的热轧碳钢钢坯

45# 钢坯是一种中碳结构钢半成品,广泛应用于需要优异机械强度和出色切削加工性的制造行业。这种热轧碳钢坯是汽车、机械和建筑行业生产锻件、型材和精密加工零件的基础原材料。凭借 0.42-0.50% 的最佳碳含量,45# 钢坯在满足大批量生产需求的同时,兼具出色的拉伸性能和具有成本效益的价格。

45# 钢坯供应商

什么是 45# 钢坯?

45# 钢坯是一种热轧半成品碳钢产品,按矩形或方形截面制造,符合 GB/T 699-2015 标准规范。该中碳钢牌号含碳量为 0.42-0.50%,抗拉强度最低为 600 MPa,屈服强度为 355 MPa,是需要兼具坚固机械性能与优异锻造性和焊接性的应用的首选。

45# 钢坯技术规格

我们的 45# 钢坯按照 GB/T 699-2015 第 5.2 节制造,碳含量为 0.42-0.50%,锰 0.50-0.80%,硅 0.17-0.37%,磷最高 0.035%,硫最高 0.035%。标准尺寸范围为横截面 100×100mm 至 300×300mm,长度为 6 至 12 米。根据 GB/T 229-2020 测试规程,该材料的布氏硬度为 170-217 HB,室温冲击韧性超过 39 J。

制造工艺与质量控制

45# 钢坯经过连铸或模铸工艺,随后在 1150-1200°C 的温度范围内进行热轧。我们的工厂采用实时光谱分析,确保化学成分精度在 ±0.02% 公差范围内。每批生产批次均按照 GB/T 2970-2016 进行超声波检测,以检测内部不连续性,验收标准要求超过 2mm 等效平底孔直径的缺陷为零。表面质量符合 GB/T 3077-2015 C 类要求,脱碳层深度最大限制为 0.5mm。

应用与行业用途

这种碳钢钢坯广泛应用于锻造曲轴、连杆、齿轮以及汽车和农业机械的重型车轴。工程机械行业使用 45# 钢坯制造挖掘机销轴、液压缸杆以及要求 600-750 MPa 抗拉强度的结构部件。机床制造商采用该牌号生产主轴、导轨和精密轴,在这些应用中,优异的切削加工性和尺寸稳定性对于实现 ±0.05mm 的严格公差至关重要。

热处理能力

45# 钢坯对淬火和回火热处理响应优异,在 840-860°C 油淬后于 550-650°C 回火,可获得 45-50 HRC 的硬度值。在 850-870°C 进行正火处理可将晶粒结构细化为 ASTM 晶粒度 6-8 级,与轧制状态相比冲击韧性提高 25-30%。感应淬火工艺可选择性地将表面层硬化至 55-60 HRC,深度为 3-8mm,同时保持芯部韧性,适用于需要耐磨表面和减震芯部的应用。

45# 钢坯制造商

常见问题

最小起订量(MOQ)是多少?

我们45#钢坯的标准最小起订量为每种规格25公吨。对于超出我们常规生产范围100-300mm方坯尺寸的定制尺寸,最小起订量增加至100公吨,以支持特殊轧制排程。我们提供灵活的包装选项,包括捆装、散装或集装箱运输,以优化国内和国际交付的运输成本。

45# steel billet China

你们提供材质检测证书吗?

每批货物均附带EN 10204 Type 3.1工厂检测证书,记录化学成分分析、按GB/T 228.1-2010标准的拉伸试验结果、冲击试验数据以及超声波检测报告。应要求,证书可附有SGS、BV或TÜV检验员的第三方见证签名。我们通过每支钢坯上打刻的炉号标识保持完整可追溯性,关联原始钢包分析和力学性能测试记录,存档至少15年。

典型交货时间是多少?

常规库存中的标准尺寸45#钢坯在付款确认后7-10个工作日内发货。定制轧制规格根据轧机排程和订单数量需要25-35天生产周期。我们与货运代理协调,安排天津或上海港的集装箱装运,至欧洲主要港口的典型海运时间为18-25天,至东南亚目的地为12-18天。

你们能切割成定制尺寸吗?

我们的精密锯切设备可进行定制长度切割,长度1-12米,公差为±5mm。我们提供附加服务,包括倒角、中心钻孔和按客户提供图纸进行的粗加工,尺寸精度为±0.2mm。可提供喷丸、酸洗和磷化等表面处理,以准备用于直接锻造作业的钢坯,或需要在室内条件下防腐蚀保护长达12个月的长期储存。

获取45#钢坯的竞争性报价

索取优质45#钢坯的工厂直销价格,附带完整的钢厂认证和定制加工服务。我们的技术销售团队提供材料选择、热处理建议和物流优化方面的专家咨询,以降低您的总到岸成本。立即联系我们,提供您的规格要求、目标交付计划和年采购量预测,以在24小时内收到包含化学成分保证和机械性能承诺的全面报价。

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
William Taylor
Australia
2025-09-12
Acceptable Quality with Delivery Coordination Issues
Purchased 12 tons of 140×140mm billets for marine shaft applications. Material quality was acceptable - carbon 0.46%, tensile 608 MPa, meeting ASTM requirements. However, initial shipment had documentation errors on 3 mill certificates requiring reissue, delaying our production by 5 days. Supplier corrected certificates promptly and provided compensation discount. Surface quality Class C per GB/T 3077. After resolution, material performed adequately in our salt spray testing. Would order again but recommend confirming documentation procedures upfront.
用户
Ahmed Al-Hassan
UAE
2025-09-29
Superior Billets for Structural Components
Supplied 45 tons of 220×220mm×9m billets for construction equipment manufacturing. Ultrasonic inspection per GB/T 2970 confirmed internal soundness - zero defects detected. After quenching from 850°C and tempering at 620°C, achieved 46 HRC with excellent impact resistance 52J at 20°C. Their chamfering service saved our processing time. Phosphating treatment provided 10-month corrosion protection in our Dubai warehouse. BV inspector witnessed all testing. Delivered to Jebel Ali port in 16 days. Excellent technical partnership.
用户
Carlos Silva
Brazil
2025-10-21
Solid Quality at Competitive Pricing
Ordered 18 tons of 120×120mm billets for agricultural machinery axle production. Material certificates showed carbon 0.44%, compliant with our specifications. Tensile strength 615 MPa, adequate for our 580 MPa requirement. Price was 12% lower than local Brazilian suppliers. Surface finish had some minor scale patches requiring shot blasting before forging. Delivery to Santos port took 38 days, slightly longer than estimated 35 days. Good value overall for non-critical applications.
用户
Wei Chen
Singapore
2025-11-08
Perfect for High-Volume Gear Forging Operations
Purchased 50 tons of 160×160mm×10m billets for heavy-duty gear production. Compared quotes from 6 Chinese suppliers - their pricing was middle range but quality documentation superior. Silicon content 0.28%, providing good fluidity during forging at 1180°C. After our carburizing process, surface hardness reached 58 HRC with core at 35 HRC. Dimensional accuracy ±2mm on cross-section. Delivered to Singapore in 14 days via container. Technical support team answered our heat treatment questions within 4 hours. Repeat customer.
用户
Robert Brown
United Kingdom
2025-11-25
Reliable Supply for Construction Equipment Parts
Supplied 40 tons of 250×250mm billets for excavator pin manufacturing. Impact toughness at room temperature tested 44J, exceeding 39J minimum per GB/T 229. After normalizing at 860°C, grain structure refined to ASTM 7, improving toughness by 28%. Brinell hardness consistent at 192-205 HB across all pieces. Their sawing service cut billets to our custom 2.8m lengths with ±3mm tolerance. Phosphorus 0.028%, sulfur 0.022% - excellent purity for welding applications. Third order, consistently reliable.
用户
Hans Mueller
Germany
2025-12-08
Good Value 45# Steel for Machine Tool Shafts
Ordered 22 tons of 180×180mm billets for precision spindle production. Material quality was solid - carbon content 0.47%, manganese 0.72%, all within specification. Machinability was good, achieving surface finish Ra 1.6μm after turning. Price was competitive, about 8% lower than European suppliers. However, delivery took 32 days instead of promised 28 days due to port congestion. Minor surface scratches on 3 pieces required additional grinding. Overall good value for high-volume production.
用户
James Wilson
United Kingdom
2025-12-23
Outstanding Quality Control and Documentation
Purchased 35 tons of 200×200mm×8m billets for hydraulic cylinder rod manufacturing. EN 10204 3.1 certificates included complete traceability with heat numbers, witnessed by SGS inspector. Tensile strength tested at 625 MPa, yield 368 MPa - exceeding our 600 MPa minimum requirement. Surface decarburization measured only 0.3mm depth, well below 0.5mm limit. Their technical team provided heat treatment curves for our induction hardening process. Packaging was excellent with moisture-proof wrapping. Highly professional supplier.
用户
Michael Torres
United States
2026-01-07
Excellent 45# Billets for Crankshaft Production
Ordered 28 tons of 150×150mm 45# steel billets for automotive crankshaft forging. Chemical composition verified at C 0.45%, Mn 0.68% - perfectly within GB/T 699 specs. Ultrasonic testing reports showed zero defects above 1.5mm. After our quench-temper process (860°C oil quench, 580°C temper), achieved consistent 48 HRC hardness across all batches. Grain size ASTM 7, excellent for our machining tolerances of ±0.03mm. Delivered to Los Angeles port in 11 days. This is our 4th 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

可定制 超低价
$465 1-49 吨 基准价
$445 50-99 吨 4.3% 优惠
$435 ≥100 吨 6.5% 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$ 465.00
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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