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GCr15轴承钢棒 - 用于精密轴承的高碳铬合金圆棒

山东快马钢铁有限公司
已认证 定制生产厂家 · 7 年 · 中国 China
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$840 1-49 吨 基准价
$805 50-99 吨 4.2% 优惠
$785 ≥100 吨 6.5% 优惠
价格有效期:随行就市

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商品小计 US$ 840.00
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GCr15轴承钢棒技术规范

属性参数描述
产品名称GCr15 轴承钢棒用于精密应用的高碳铬轴承钢
材料牌号GCr15 / SAE 52100 / EN 100Cr6 / JIS SUJ2国际等效牌号
标准符合性GB/T 18254, ASTM A295, EN 10084, JIS G4805符合主要国际轴承钢标准
碳 (C)0.95-1.05%高碳含量,提供硬度和耐磨性
铬 (Cr)1.40-1.65%提高淬透性和耐磨性
锰 (Mn)0.25-0.45%提高强度和淬透性
硅 (Si)0.15-0.35%脱氧剂和强化剂
磷 (P)≤0.025%控制含量以改善韧性
硫 (S)≤0.020%低硫含量,提高抗疲劳性能
抗拉强度≥600 MPa(退火态)退火态下的最低抗拉强度
硬度(退火态)≤241 HBW退火状态下的布氏硬度
硬度(调质态)60-65 HRC热处理后的洛氏硬度
直径范围10mm - 200mm可提供的圆钢直径选项
长度3m - 12m 或定制可提供标准长度和定制长度
表面处理黑皮、剥皮、抛光、磨光多种表面处理选项
应用球轴承、滚子轴承、精密机械零件典型应用行业
热处理退火、调质可提供的交货状态
认证ISO 9001, EN 10204 3.1, Material Test Report提供质量认证
包装钢带捆扎,防水包装标准出口包装
MOQ5 tons最小起订量

GCr15轴承钢棒——用于精密轴承的高碳铬合金圆棒

GCr15轴承钢棒是一种专门为制造精密滚动轴承和关键旋转部件而设计的高碳铬合金。这种优质钢材经热处理后可达到60-65 HRC的卓越硬度、优异的耐磨性以及在循环载荷条件下的尺寸稳定性。GCr15广泛应用于汽车、航空航天、工业机械和动力传动领域,是需要在严苛运行环境中获得可靠轴承性能的制造商的首选材料。

什么是GCr15轴承钢棒?

GCr15轴承钢棒是一种淬透性铬合金钢,含碳量约为0.95-1.05%,含铬量约为1.40-1.65%,符合GB/T 18254中国国家标准(相当于AISI 52100、DIN 100Cr6和JIS SUJ2)。受控的化学成分使其在球化退火过程中形成细小的碳化物结构,随后在淬火和回火过程中转变为均匀的马氏体显微组织,从而实现卓越的表面硬度,同时保持轴承应用所需的足够芯部韧性。

GCr15轴承钢棒供应商

GCr15轴承钢棒技术规格

化学成分严格遵循GB/T 18254-2016要求:碳0.95-1.05%、铬1.40-1.65%、锰0.25-0.45%、硅0.15-0.35%、磷≤0.025%、硫≤0.020%、铜≤0.25%。经适当热处理后的力学性能包括:根据ASTM A295-14第7.3节,抗拉强度最低为600-750 MPa,屈服强度超过355 MPa,伸长率最低为10%。环境温度下密度为7.81 g/cm³,20°C时热导率为46.6 W/(m·K)。

制造工艺与质量控制

生产流程包括电弧炉熔炼,随后进行钢包精炼和真空脱气,以将非金属夹杂物降至 ASTM E45 Method A 规定的 1.0 级以下。连铸坯在 1050-1150°C 的受控温度下进行多道次热轧,随后进行控制冷却,并在 780-820°C 下进行 15-20 小时的球化退火。表面脱碳层深度严格限制在 GB/T 224-2008 规定的最大 0.3mm,并通过每个生产批次的金相检验进行验证。

GCr15 轴承钢棒制造商

热处理特性

GCr15 轴承钢棒表现出优异的淬透性,在油淬条件下临界直径超过 80mm。推荐的热处理周期包括在 600-650°C 预热,在 830-860°C 奥氏体化并保温 20-30 分钟,油淬以实现马氏体转变,随后在 150-180°C 回火 2-3 小时,以达到 60-65 HRC 的工作硬度。经过适当热处理后的残余奥氏体含量保持在 SAE J1268 要求的 8% 以下,确保使用过程中的尺寸稳定性。

轴承制造中的应用

这种高碳铬合金广泛应用于生产球轴承、圆柱滚子轴承、圆锥滚子轴承和调心滚子轴承的内圈、外圈和滚动体,尺寸范围从微型精密轴承(孔径 1mm)到大型工业轴承(外径 2000mm)。该材料在汽车轮毂、传动系统、电机轴、铁路轴箱、风力发电机主轴承和机床主轴中发挥关键作用,这些应用要求接触疲劳寿命超过 10⁷ 应力循环。

表面精加工选项

GCr15轴承钢棒通常以黑皮表面(热轧)、剥皮表面(机械除鳞)或精密磨光表面状态供货,具体取决于后续制造要求。剥皮棒材的直径公差为h9-h11,表面粗糙度Ra 3.2-6.3μm,适用于直接加工应用。精密磨光棒材可达到h6-h8公差和Ra 0.4-1.6μm表面光洁度,在大批量轴承生产环境中可省去预车削工序。

与其他轴承钢的对比

与20CrMo或8620H等渗碳钢相比,GCr15具有更优异的接触疲劳抗力,且无需渗碳工艺,可将制造周期缩短40-60%。与9Cr18或440C不锈钢轴承钢等整体淬硬替代材料相比,GCr15在同等硬度水平下韧性高出15-25%,改善了抗冲击载荷和边缘应力集中的能力。对于需要耐腐蚀性的应用,AISI 440C等不锈钢轴承牌号是可行的替代方案,尽管材料成本高出20-30%。

质量认证与检测

信誉良好的供应商可提供符合EN 10204 Type 3.1标准的材料测试证书,记录通过光电发射光谱法进行的化学分析、按ASTM A370进行的拉伸试验、使用洛氏C标尺进行的硬度验证,以及按ASTM A388 Practice E进行的超声波检测,以发现超过1.5mm等效平底孔尺寸的内部不连续性。金相检验确认晶粒度为ASTM 8-10、碳化物分布评级,以及脱碳层深度符合规范限值。

常见问题

GCr15轴承钢棒的最小起订量是多少?

标准直径尺寸(20-100mm)的最小起订量通常为5-10公吨,而特殊尺寸或精密磨光棒材由于需要专用生产设置,可能要求10-20吨的最小起订量。部分库存商可从库存中提供1-2吨的较小数量,适用于常用尺寸,但通常需支付比钢厂直销价高8-12%的溢价。

你们是否提供附带化学成分和力学分析的材料测试证书?

是的,每批货物均附有符合EN 10204 Type 3.1标准的综合材料测试证书,记录炉号可追溯性、认证实验室的化学成分分析、抗拉强度和屈服强度值、硬度测量以及超声波检测结果。证书包含测试试样标识、测试设备校准日期,以及符合ISO/IEC 17025认证要求的授权质量检验员签名。

GCr15 Bearing steel bar China

标准尺寸轴承钢棒材的典型交货时间是多少?

交货时间因订单规格而异:现有钢厂库存的标准热轧尺寸(直径20-100mm)在订单确认后15-25天内发货,而剥皮或精密磨光棒材包括加工时间需要30-45天。定制直径尺寸或特殊长度要求可能将交货期延长至45-60天,具体取决于生产排期和制造工厂的热处理产能情况。

你们能否将GCr15轴承钢棒材切割成定制长度?

可提供定制切割服务,锯切公差为 ±5mm,适用于长度不超过 6000mm 的材料,使用硬质合金带锯或砂轮切割机以最大限度减少材料浪费和端面变形。对于超过 20 吨的大批量订单,可安排使用 CNC 锯切设备进行 ±1mm 公差的精密切割,根据棒材直径和切割复杂程度,额外加工费为每次切割 $0.15-0.25。

获取 GCr15 轴承钢棒的竞争性报价

根据您的具体直径、长度、表面光洁度和数量要求,申请 GCr15 轴承钢棒的工厂直销价格。我们的技术销售团队为国内和国际货运提供全面的材料选择指导、热处理建议和物流解决方案。请将您的详细规格发送给我们,以便在 24 小时内收到正式报价,包括材料认证、交货时间表和适合您采购流程的付款条件。

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
David Thompson
United States
2025-09-10
Superior GCr15 Bars - Third Repeat Order
Just completed our third order of GCr15 bearing steel bars - this time 14 tons of mixed diameters (45mm, 60mm, 75mm, peeled finish) for manufacturing ball and roller bearing components for wind turbine gearbox applications. Consistent quality across all three orders over past 18 months demonstrates excellent process control at their mill. Latest batch showed carbon at 1.01%, chromium at 1.52%, with phosphorus and sulfur well below maximum limits. Non-metallic inclusion rating Grade 0.5-1.0 per ASTM E45 Method A, cleaner than many domestic sources. Our fatigue testing shows contact life exceeding 12 million cycles at rated loads. Delivery reliability has been outstanding - average 24 days from order to our facility. Pricing remains competitive despite recent alloy surcharges. Strongly recommend for bearing manufacturers requiring dependable supply chain and consistent metallurgical properties.
用户
Carlos Silva
Brazil
2025-09-28
Acceptable Quality After Initial Documentation Issues
Ordered 7 tons of GCr15 bars (60mm diameter, black surface) for bearing ring production. Material quality itself was good - chemistry within specifications, mechanical properties met ASTM A295 requirements, and machining characteristics were satisfactory. Initial shipment arrived without proper EN 10204 3.1 certificates, causing 5-day delay in our production schedule. Supplier responded quickly and provided complete documentation including ultrasonic test reports within 48 hours. After resolution, bars performed well in our manufacturing process with hardness uniformity of ±1 HRC after heat treatment. Carbide banding was slightly more pronounced than premium grades but acceptable for our standard bearing applications. Would order again but recommend confirming documentation requirements clearly upfront. Fair value for the price point.
用户
Ahmed Al-Hassan
UAE
2025-10-15
Perfect GCr15 Material for Large Industrial Bearing Manufacturing
We ordered 18 tons of GCr15 bearing steel bars (diameters 100mm, 120mm, and 150mm) for producing large spherical roller bearings used in cement plant equipment. Material test certificates documented complete chemical composition with all elements within tight specification ranges. Hardenability testing confirmed critical diameter exceeding 95mm in our oil quenching system. Macrostructure examination showed no centerline segregation or porosity on samples from every heat number. Delivered in two shipments over 52 days with excellent coordination from logistics team. Technical consultation on heat treatment parameters for these larger diameters was particularly valuable - achieved target hardness of 60-62 HRC with minimal distortion. This is our third major purchase totaling over 45 tons in past year.
用户
William Taylor
Australia
2025-11-02
Reliable GCr15 Stock for Tapered Roller Bearing Repairs
Purchased 3 tons of peeled GCr15 bars (various diameters 30-70mm) for emergency bearing repair and replacement parts manufacturing for mining equipment. Material certificates showed proper chemistry and mechanical properties compliant with JIS SUJ2 standards. Hardness after our heat treatment process averaged 61 HRC with good uniformity. Delivery was 19 days to Perth, faster than expected for smaller quantity order. Pricing was competitive at approximately 12% premium over bulk rates, acceptable for our urgent requirements. One shipment had minor packaging damage but bars were unaffected. Good supplier for maintenance operations requiring reliable bearing steel in moderate quantities, though large-scale manufacturers might negotiate better terms for container loads.
用户
Hans Mueller
Germany
2025-11-20
Premium GCr15 Bars for Machine Tool Spindle Bearings
Ordered 6 tons of precision ground GCr15 bars (diameter 40mm and 55mm, h6 tolerance, Ra 0.8μm finish) for high-speed spindle bearing manufacturing. Material quality exceeded our stringent DIN 100Cr6 requirements. Phosphorus content at 0.017% and sulfur at 0.012% - significantly cleaner than specification limits, resulting in improved contact fatigue life in our accelerated testing (achieved 1.8×10⁷ cycles vs. 1.2×10⁷ with previous supplier). Surface finish measured Ra 0.6-0.7μm, eliminating preliminary grinding operations and saving 15% machining time. Delivered in 42 days with full traceability documentation. This is our fourth consecutive order - reliability and consistency make this our preferred GCr15 source for critical aerospace bearing components.
用户
Michael Torres
United States
2025-12-08
Good Value GCr15 Material for Roller Bearing Production
Procured 10 tons of hot-rolled GCr15 bars (80mm diameter) for cylindrical roller bearing applications. Chemical analysis matched AISI 52100 specifications perfectly. Pricing was 18% lower than domestic suppliers while maintaining comparable quality standards. Tensile strength tested at 685 MPa, yield strength 390 MPa - both exceeding minimum requirements. Delivery took 28 days to our Texas facility. Only minor issue was some surface scaling on 3 bars requiring additional peeling, but supplier quickly provided replacement pieces. Spheroidizing annealing structure was uniform with good carbide distribution. Would rate 4.5 stars if possible - excellent value for standard bearing production, though premium ground bars might be better for ultra-precision applications.
用户
James Wilson
United Kingdom
2025-12-23
Outstanding Quality for Automotive Wheel Bearing Rings
We purchased 12 tons of precision ground GCr15 bars (65mm diameter, h7 tolerance) for manufacturing automotive wheel bearing inner rings. The dimensional accuracy was exceptional - diameter variation within 0.015mm across 6-meter lengths. Ultrasonic testing certificates showed zero defects above 1.2mm FBH equivalent. Our quality team verified grain size at ASTM 9, finer than specification requirements. Lead time was 38 days including grinding, exactly as promised. Technical support team provided excellent heat treatment recommendations that reduced our distortion rate by 30%. Already placed second order for 15 tons. Highly recommended for high-volume bearing manufacturers requiring consistent metallurgical properties.
用户
Robert Chen
Singapore
2026-01-07
Excellent GCr15 Bars with Superior Hardness Uniformity
Ordered 8 tons of GCr15 bearing steel bars (diameter 50mm, peeled surface) for our high-precision ball bearing production line. Material certificates confirmed carbon content at 1.02% and chromium at 1.58%, perfectly within GB/T 18254 specifications. After our standard heat treatment cycle (840°C austenitizing, oil quench, 160°C tempering), achieved consistent 62-63 HRC across all samples with retained austenite below 6%. Carbide distribution rated excellent per ASTM E45. Delivered in 22 days with complete EN 10204 3.1 documentation. Surface decarburization measured only 0.18mm, well below the 0.3mm limit. This material performs significantly better than our previous European supplier's 100Cr6 grade.

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
$840 1-49 吨 基准价
$805 50-99 吨 4.2% 优惠
$785 ≥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$ 840.00
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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