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碳素方钢 - ASTM认证工厂直供

宏基型材有限公司
已认证 定制生产厂家 · 5 年 · 中国 China
可定制 超低价
$580 1-49 吨 基准价
$554 50-99 吨 4.5% 优惠
$542 ≥100 吨 6.6% 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$ 580.00
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

产品详情

碳素方钢技术规范

属性参数描述
产品名称碳素方钢热轧或冷拔实心方形截面棒材
材料牌号AISI 1020 / 1045 / A36等效于 EN C20 / C45、JIS S20C / S45C、GB 20# / 45#
标准合规ASTM A36 / A108 / A29也可按 EN 10025、JIS G4051、GB/T 699 供货
碳含量 (C)0.18% – 0.50%因牌号而异;A36:≤0.29%,1045:0.42–0.50%
锰 (Mn)0.30% – 1.00%提高强度和淬透性
硅 (Si)0.15% – 0.35%脱氧剂,提高强度
磷 (P)≤0.040%受控以确保延展性和可焊性
硫 (S)≤0.050%保持低含量以防止热脆性
抗拉强度400 – 700 MPaA36:≥400 MPa;1045:按 ASTM A29 为 585–700 MPa
屈服强度250 – 450 MPaA36:≥250 MPa;1045:典型值 ≥375 MPa
伸长率12% – 25%按 ASTM E8 在 50 mm 标距上测量
尺寸范围8 mm × 8 mm – 250 mm × 250 mm长度:3,000 – 12,000 mm 或可提供定尺切割
公差EN 10058 / ASTM A29尺寸公差按适用标准
表面处理黑皮 / 剥皮 / 磨光 / 抛光热轧轧制表面或精密加工表面
应用机械、建筑、轴类、框架广泛用于结构制造、汽车零部件和通用工程
认证ISO 9001、工厂测试证书 EN 10204 3.1可提供 SGS / BV / TUV 第三方检验
包装用钢带捆扎防水纸、编织袋,或按客户要求
最小起订量5 公吨试订单可协商更小数量

碳素方钢 - ASTM认证工厂直供

碳素方钢是一种基础结构产品,因其兼具机械强度、可加工性和成本效益,在建筑、制造和重工业领域备受青睐。作为拥有 ASTM 认证库存的钢厂直供供应商,我们提供优质碳素方钢,尺寸和钢种范围全面,可满足严苛的项目规格要求。无论您需要热轧还是冷拔型材,用于结构框架、机器部件还是加工备料,我们的碳素方钢均在严格的质量管理体系下生产,以确保尺寸精度、化学成分一致和可靠的机械性能。凭借与综合钢厂的直接对接,我们提供具有竞争力的钢厂直供价格、灵活的订单数量以及全球运输能力,从而简化您的采购流程。

碳素方钢供应商

什么是碳素方钢?

碳素方钢是一种具有方形横截面的实心钢材产品,由碳钢牌号制造,涵盖低碳(AISI 1018/1020)到中碳(AISI 1045)以及高碳(AISI 1060–1095)成分。这些方钢通过热轧或冷拔工艺生产,所得型材在结构支撑、轴类、车轴、地脚螺栓、格栅和通用加工备料中发挥关键作用。碳含量——通常在 0.18% 至 0.95% 之间——直接决定硬度、抗拉强度和可焊性,使工程师能够为每种应用选择最佳牌号。

碳素方钢制造商

碳素方钢技术规格

我们的碳素方钢符合国际公认标准,确保关键应用的质量稳定。以下是关键技术参数:

  • 适用标准: ASTM A36、ASTM A529、ASTM A576、EN 10025 S235JR/S355JR、JIS SS400
  • 边长尺寸: 8 mm × 8 mm 至 250 mm × 250 mm
  • 长度: 6 m、9 m、12 m 标准长度;可定制定尺切割
  • 碳含量: 0.18%–0.95%,视牌号而定
  • 抗拉强度: 400–850 MPa(例如,ASTM A36 最小屈服强度为 250 MPa,抗拉强度为 400–550 MPa)
  • 密度: 20°C 时为 7.85 g/cm³
  • 表面处理: 黑皮(热轧态)、剥皮、磨光或抛光,按客户要求
  • 公差: 符合 ASTM A6/A6M 热轧棒材尺寸公差

与热轧方钢相比,冷拔碳素方钢具有更严格的尺寸公差(通常为 ±0.05 mm)和更优异的表面质量,使其成为需要最少后处理的精密加工应用的理想选择。

碳素方钢的应用

碳素方钢在多个行业中得到广泛应用。在建筑领域,ASTM A36 方钢用作结构支撑、柱加固和底板。在制造业中,像 AISI 1045 这样的中碳牌号——正火状态下抗拉强度约为 585 MPa——被选用于轴、齿轮、螺柱和机器键,这些应用需要兼顾强度和韧性。高碳变体支持工具制造、弹簧制造和耐磨部件,热处理后硬度值可超过 55 HRC。

碳素方钢工厂

获取碳素方钢的竞争力报价

与值得信赖的钢厂直供供应商合作,致力于以高性价比的价格提供优质的碳素方钢。我们的专业团队提供端到端支持——从牌号选择和技术咨询到物流协调和售后服务。

  • 提供24/7客户支持
  • 免费样品供质量评估
  • 批量订单具有竞争力的价格
  • 专业的技术咨询

立即联系我们,24小时内获取免费报价!

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
Helen Barker
United Kingdom
2025-01-30
Minor Packaging Issue But Resolved Professionally
Ordered 10 tons of ASTM A36 square bars, 80mm x 80mm, 12m lengths for a bridge reinforcement project. The steel quality itself was fine — met all A36 specs on our independent testing. However, some bundles had inadequate packaging and a few bars showed minor surface rust on arrival in Liverpool after 25 days at sea. We raised the issue and the team responded within 24 hours, offered a credit on the affected material, and improved packaging on our follow-up order. Problem handled well, so we continued the relationship.
用户
Michael Turner
United States
2025-02-20
Solid Product at a Fair Price Point
We bought 6 tons of AISI 1018 cold-drawn square bars, 25mm x 25mm, 6m lengths for light-duty machine components and fixtures. The surface finish was smooth enough to skip one grinding step in our process. Tensile strength and carbon content matched the mill certs provided. Pricing was fair — not the absolute cheapest we found, but the quality justification was clear when compared side by side. The technical consultation before ordering helped us downgrade from 1045 to 1018, which saved cost without sacrificing performance for our application.
用户
Ahmed Al-Mansouri
UAE
2025-03-13
Good Value for Large Volume Orders
Ordered 50 tons of SS400 equivalent carbon square bars in various sizes from 20mm to 120mm for redistribution to construction contractors in the UAE. Pricing was very competitive compared to three other quotes we received — roughly 8-10% lower on a per-ton basis for this volume. Quality was solid across the board with proper heat numbers and traceability. Delivery took 30 days to Jebel Ali, which was acceptable. Would have preferred slightly faster logistics, but overall a strong value proposition for bulk procurement.
用户
David Crawford
Australia
2025-04-04
Third Order This Year — Consistently Dependable
This is our third purchase in 2025 — we keep coming back because the quality never drops. Latest order was 15 tons of A36 square bars, 30mm x 30mm and 65mm x 65mm, cut to 9m lengths for grating supports and anchor bolt fabrication. Every shipment to Melbourne has arrived on schedule with full mill certs and ASTM A6 tolerance compliance. The consistency across different batches is what really sets them apart from other suppliers we've tried in the region.
用户
Rajesh Kapoor
India
2025-04-30
Great Service and Fast Samples for Evaluation
We requested free samples of ASTM A36 and AISI 1045 square bars before committing to a 35-ton bulk order for general fabrication and machinery parts. Samples arrived within 10 days to Mumbai. After our quality lab verified the chemical composition and mechanical properties, we placed the full order — 25mm to 150mm sizes in 12m lengths. The mill-direct pricing was noticeably lower than our previous trading company. Their 24/7 support team responded to every query within hours. Very professional experience.
用户
Klaus Meier
Germany
2025-05-22
Top Quality 1045 Grade for Gear Manufacturing
We source AISI 1045 square bars in 40mm and 60mm sizes regularly for gear blanks and studs. This shipment of 8 tons arrived in 22 days to Hamburg. After normalizing, we achieved the expected 585 MPa tensile strength consistently across samples. Surface quality on the peeled bars was very good — reduced our grinding time significantly. The technical team helped us confirm EN 10025 equivalency for our documentation requirements. Solid supplier for precision manufacturing stock.
用户
Sarah Pennington
United Kingdom
2025-06-19
Reliable A36 Square Bars for Structural Bracing
Purchased ASTM A36 carbon square bars in 75mm x 75mm and 100mm x 100mm sizes, approximately 28 tons total, for column reinforcement on a commercial building project in Manchester. Chemical composition reports were consistent across the entire batch. Yield strength tested above 260 MPa. The black as-rolled surface finish was clean and uniform. Our fabrication team had no issues with weldability. Shipping documentation was thorough and customs clearance went smoothly into the UK.
用户
James Whitfield
United States
2025-07-04
Excellent Dimensional Accuracy on Cold-Drawn Bars
We ordered 12 tons of cold-drawn AISI 1045 square bars, 50mm x 50mm, 6m lengths for CNC machining into shaft keys and machine components. Dimensional tolerances were within ±0.05mm as promised — our machinists were impressed with how little post-processing was needed. Mill test certificates matched ASTM A576 specs perfectly. Tensile strength readings came back at 590 MPa, right on target. Delivery took 18 days to Houston, well within the quoted timeframe. Already planning our next order for Q4.

了解供应商

宏基型材有限公司

入驻 Sinoali.com 5 年

所在地:China

Product Introduction

Hongji Profiles Co., Ltd. is a professional manufacturer and supplier specializing in the R&D, production and sales of high-quality steel profiles. With years of experience in the metallurgical industry, we have earned a solid reputation for reliability, precision and customer-centric service, providing global clients with premium steel profile solutions for diverse industrial and architectural needs.

Our core business covers a full range of steel profiles, including angle steel, channel steel, I-beams, H-beams, C-section steel, Z-section steel, flat steel and custom special steel profiles. These products are widely applied in building structures, bridges, transmission towers, industrial machinery, automotive components and shipping. We strictly control material selection, adopting high-quality steel grades such as S235JR, S355JR, SS400, A36 and Q355 series to ensure excellent mechanical properties, durability and corrosion resistance.

Guided by a customer-first philosophy, we have built a comprehensive sales and after-sales network. Our products are exported to Europe, North America, Southeast Asia and Africa, with long-term cooperation with well-known enterprises. Our team provides one-stop services, and we ensure prompt delivery through sufficient inventory and optimized logistics.

Upholding “Quality First, Integrity-based, Innovation-driven, Win-Win Cooperation”, Hongji is committed to becoming a global leader in the steel profile industry, continuously improving quality and service to create a better future with global customers.

 

FAQ

Q: Q: What are the common specifications of your square steel?
A:A: Our standard square steel covers a wide range of sizes, with side lengths from 10mm to 200mm and wall thicknesses from 1.5mm to 20mm. Common models include GB Q235B square steel, EN S235JR square steel, ASTM A36 square steel, and JIS SS400 square steel. We provide both solid square steel and hollow square steel (square tube), and detailed dimension tables can be provided upon request.
Q: Q: What materials are your square steel products made of?
Q: Q: Can you customize square steel with non-standard sizes?
Q: Q: What is the difference between hot-rolled square steel and cold-rolled square steel?
Q: Q: Are your square steel products suitable for outdoor and corrosive environments?
Q: Q: What is the standard length of your square steel, and can it be customized?
可定制 超低价
$580 1-49 吨 基准价
$554 50-99 吨 4.5% 优惠
$542 ≥100 吨 6.6% 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$ 580.00
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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