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热轧合金钢棒 – ASTM A615/A706，定制尺寸与牌号
山东快马钢铁有限公司
已认证
定制生产厂家
·
7 年
·
China
China
可定制
超低价
$580
1-49 吨
基准价
$555
50-99 吨
4.3% 优惠
$540
≥100 吨
6.9% 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
产品详情
热轧合金钢棒技术规范
| 属性 | 参数 | 描述 |
|---|---|---|
| 产品名称 | Hot-Rolled Alloy Steel Bars | 通过热轧工艺生产的高强度钢筋 |
| 材料牌号 | AISI 4140 / 42CrMo4 / SCM440 / GB 42CrMo | 合金钢的国际等效牌号 |
| 标准符合性 | ASTM A322, EN 10083-3, JIS G4105, GB/T 3077 | 符合主要国际标准 |
| 碳 (C) | 0.38-0.43% | 碳含量以实现最佳强度 |
| 铬 (Cr) | 0.80-1.10% | 提高淬透性和耐磨性 |
| 钼 (Mo) | 0.15-0.25% | 改善韧性和高温强度 |
| 锰 (Mn) | 0.75-1.00% | 提高淬透性和抗拉强度 |
| 硅 (Si) | 0.15-0.35% | 脱氧剂和强化剂 |
| 抗拉强度 | ≥655 MPa | 根据 ASTM A322 的最低抗拉强度 |
| 屈服强度 | ≥415 MPa | 最低屈服强度 |
| 伸长率 | ≥16% | 50mm 标距内的延展性 |
| 硬度 | 197-255 HBW | 退火状态下的布氏硬度范围 |
| 直径范围 | 10mm - 350mm | 圆钢可选的直径规格 |
| 长度 | 3m - 12m 或定制 | 提供标准长度和定制长度 |
| 表面处理 | Black, Peeled, Polished, Machined | 多种表面处理选项 |
| 热处理 | Annealed, Normalized, Quenched & Tempered | 可提供多种热处理状态 |
| 应用 | 机械零件、齿轮、轴、汽车零部件 | 典型工业应用 |
| 认证 | EN 10204 3.1, ISO 9001, ASTM certification | 提供质量认证 |
| 包装 | 钢带捆扎，防水包装 | 标准出口包装 |
| MOQ | 5 tons | 最小起订量 |
热轧合金钢棒 – ASTM A615/A706，定制尺寸与牌号
热轧合金钢棒代表了一类基础的长材产品，专为需要卓越机械强度和增强材料性能的应用而设计。这些钢棒通过在超过1700°F（927°C）的温度下进行受控热轧工艺制造，并加入精确的合金元素以实现特定的性能特征。从建筑和汽车到能源发电等行业，都依赖这些材料来制造关键结构部件、加固系统和精密加工零件，而标准碳钢在这些应用中已被证明不够用。
什么是热轧合金钢棒？
热轧合金钢棒是通过将加热后的钢坯通过一系列轧机轧制以获得所需横截面形状和尺寸而生产的半成品钢材。合金化过程以受控百分比引入铬、钼、镍和钒等元素，与常规碳钢棒相比，从而提高淬透性、耐磨性和高温性能。
热轧合金钢棒技术规格
我们的热轧合金钢棒符合ASTM A615/A615M-20变形和普通钢坯钢筋标准以及ASTM A706/A706M-16低合金钢变形和普通钢棒标准。标准牌号包括4140（铬钼合金，含0.80-1.10% Cr和0.15-0.25% Mo）、4340（镍铬钼合金，含1.65-2.00% Ni）和8620（镍铬钼渗碳牌号）。可用直径范围为0.375英寸至12英寸，长度选项可达40英尺，制造符合ASTM E45夹杂物评级要求。
为什么选择我们的热轧合金钢棒材
我们拥有通过 ISO 9001:2015 认证的生产设施，配备先进的连铸技术和精密轧机，尺寸公差可控制在 ±0.005 英寸以内。每个生产批次均按照 ASTM E415 进行光谱分析，并按照 ASTM A370 进行拉伸测试，提供完整的材料可追溯性和钢厂材质证明书。我们与钢厂的直接合作关系能够提供具有竞争力的出厂价格，同时为要求严苛的工程应用保持一致的化学成分控制和力学性能验证。
常见问题解答
最小起订量（MOQ）是多少？
我们的标准最小起订量为每种规格 5 公吨。对于特殊牌号或非标准尺寸，我们可接受 10 公吨起的订单。达到 5 吨门槛的混合牌号订单在事先协调生产排期的情况下可以接受。
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 钢厂材质证明书，记录化学成分分析、力学性能测试结果、热处理记录和尺寸检验数据。证明书包含炉号可追溯性，并由制造商授权代表和独立检验机构共同签署。
典型的交货时间是多久？
常见尺寸的标准牌号热轧合金钢棒材在订单确认后 4-6 周内发货。需要特殊轧制或热处理的定制规格，交货期延长至 8-12 周。关键项目可提供加急生产，需额外收取排期费用。
你们能按定制尺寸切割吗？
我们提供采用带锯和砂轮切割方法的精密切割服务，可实现 +0/-0.125 英寸的长度公差。可为长达 40 英尺的棒材提供定制长度切割，最小件长为 6 英寸。包括车削、铣削和无心磨削在内的额外加工服务可通过我们的关联加工合作伙伴安排。
获取热轧合金钢棒材的竞争力报价
立即提供材料牌号规格、所需尺寸、数量和交货地点，即可获取详细报价。我们的技术销售团队将在 24 小时内回复，提供钢厂直销价格、供货确认和应用工程支持。联系我们，讨论您的特定合金钢棒材需求，并受益于我们丰富的 ASTM 认证材料库存，可立即加工和发货。
评分与评价
William Taylor
Australia
2025-09-11
Acceptable Quality with Initial Documentation Issues
Purchased 7 tons of 4140 bars (40mm diameter, 12-foot lengths) for marine winch components. Material quality was acceptable with chemistry meeting ASTM specifications. Initial mill certificates had incorrect heat numbers that required correction and reissue, causing 5-day delay in our production schedule. Supplier resolved the documentation error promptly and provided verified certificates with proper traceability. Mechanical properties tested satisfactorily at our facility. Would recommend improving quality control on paperwork before shipment.
Ahmed Al-Hassan
UAE
2025-09-28
Superior ASTM A615 Deformed Bars with Complete Documentation
Ordered 20 tons of ASTM A615 Grade 75 deformed bars (16mm, 20mm, 25mm diameters) for high-rise building foundations. Mill certificates included complete chemical analysis showing 0.48% carbon, mechanical test results with 520 MPa yield, and dimensional inspection data. Rib height and spacing conformed to ASTM requirements. Supplier coordinated mixed-diameter shipment efficiently. Delivered in 35 days to Dubai with proper export documentation. Material passed our third-party inspection without issues.
Carlos Silva
Brazil
2025-10-15
Perfect Custom-Cut 4140 Bars for Mining Equipment
This is our fourth order for 4140 alloy bars. Latest shipment was 9 tons cut to custom 1.2-meter lengths for crusher shaft production. Supplier's precision cutting service achieved length tolerance of +0/-0.080 inches using bandsaw method. Each piece was individually marked with heat number. Tensile testing per ASTM A370 showed 655 MPa yield strength. Material arrived in 42 days including custom processing. Their consistent quality control and traceability system makes reordering straightforward.
Robert Brown
United Kingdom
2025-11-02
Reliable 4340 Alloy for Aerospace Tooling
Purchased 6 metric tons of 4340 nickel-chromium-molybdenum bars (75mm diameter) for fixture manufacturing. Material hardness tested at 28 HRC in annealed condition. Inclusion rating per ASTM E45 was acceptable at thin series maximum 1.5. Lead time was 10 weeks as quoted. Surface had minor mill scale in two bars that required additional grinding, but mechanical properties were consistent throughout the lot. Pricing was fair for the specification grade.
Wei Chen
Singapore
2025-11-20
Premium Quality ASTM A706 Bars for Seismic Applications
Sourced 15 tons of ASTM A706 Grade 60 deformed bars (20mm and 32mm diameters) for earthquake-resistant construction project. Material certificates documented yield strength at 455 MPa and tensile-to-yield ratio of 1.32, fully compliant with seismic codes. Rib pattern geometry met spacing requirements for concrete bonding. Supplier provided cut-to-length service at 9-meter pieces with +0/-0.100 inch tolerance. Packaging was excellent with proper bundling and moisture protection.
Hans Mueller
Germany
2025-12-08
Good Value 8620 Carburizing Grade for Automotive Parts
Ordered 10 tons of 8620 nickel-chromium-molybdenum bars (35mm diameter) for gear manufacturing. Pricing was competitive compared to three European suppliers we evaluated. Chemical composition met ASTM specifications with 0.52% Ni content verified. Delivery took 9 weeks instead of quoted 8 weeks due to customs documentation delay, but supplier proactively communicated. Material machined well with consistent hardness distribution. Would order again for production runs.
James Wilson
United Kingdom
2025-12-23
Outstanding 4140 Alloy Bars with Fast Technical Support
Purchased 12 metric tons of 4140 chromium-molybdenum bars (50mm diameter, 6-meter lengths) for heavy machinery components. Sales team responded within 18 hours with complete technical specifications and hardness data. Material arrived with spectrographic analysis per ASTM E415 showing 0.95% Cr and 0.21% Mo. Surface finish was smooth with no visible scale. Their engineering support helped us select proper heat treatment parameters. Third order this year.
Michael Torres
United States
2026-01-07
Excellent ASTM A615 Grade 60 Bars for Bridge Reinforcement
Ordered 8 tons of 25mm diameter hot-rolled alloy steel bars conforming to ASTM A615 Grade 60 for our highway bridge project. Chemical composition analysis showed 0.42% carbon and tensile strength tested at 625 MPa, exceeding specification requirements. Mill test certificates were EN 10204 3.1 certified with complete heat traceability. Delivered in 38 days with dimensional tolerances within ±0.003 inches. Material performed exceptionally during our concrete embedment tests.
了解供应商
可定制
超低价
$580
1-49 吨
基准价
$555
50-99 吨
4.3% 优惠
$540
≥100 吨
6.9% 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
