Raytron Technical Review RESEARCH ARTICLE WP-06-09

Aluminum Clad Steel: Strength-to-Weight Optimization

RAYTRON技术团队¹ *

¹RAYTRON集团技术研究中心, 中国

^*Corresponding author

Received: 2025年12月 Accepted: 2026年2月 Published: 2026年3月

DOI: 10.1234/raytron.2026.WP-01-19

Abstract

铝包钢（ACS）结合了钢的高强度与铝的耐腐蚀性和导电性。本白皮书研究ACS的性能、制造和应用，重点关注架空输电线、OPGW和基础设施应用中的强度重量优化。

Key Findings

Excellent Strength-to-Weight Ratio ACS achieves tensile strength of 1100-1600 MPa with density of only 6.5-7.5 g/cm³, providing excellent strength-to-weight ratio, ideal core material choice for overhead transmission lines.
Excellent Corrosion Resistance Aluminum cladding provides complete corrosion protection for steel core, with long-term stability in harsh environments like industrial and marine, requiring no additional corrosion protection measures.
ACSR Core Application ACS serves as reinforcing core for ACSR (Aluminum Conductor Steel Reinforced), providing mechanical strength support, working synergistically with outer aluminum conductors, enabling economical design of long-span transmission lines.
OPGW Key Material ACS is the foundation material for OPGW (Optical Ground Wire), simultaneously providing mechanical strength, lightning protection, and fiber optic protection functions, enabling power-communication integration.

Keywords

ACS;铝包钢;ACSR;OPGW;架空导体;强度重量比

1. 引言

铝包钢线主要用作ACSR的芯材和OPGW电缆的基础。

2. 材料性能

3. 制造工艺

4. ACSR应用

创建ACSR结构示意图

MEDIA TODO

Figure Fig. 1 ACSR结构示意图

5. OPGW应用

创建OPGW结构图

MEDIA TODO

Figure Fig. 2 OPGW结构图

6. 其他应用

7. 结论

ACS在架空输电和通信基础设施中提供优异的强度重量性能。

Frequently Asked Questions

What are the advantages of ACS compared to galvanized steel wire?

ACS's aluminum cladding provides better corrosion resistance and conductivity. Compared to galvanized coating, aluminum cladding is thicker, more uniform, more durable, and has better conductivity (20-30% IACS vs galvanized steel's about 10%), suitable for applications requiring conductivity like OPGW and grounding.

What is the role of ACS in ACSR?

In ACSR, ACS wire serves as core providing mechanical strength, supporting the entire conductor structure. Outer aluminum wires provide main conductive channels. This combination achieves balance of high strength (from steel core) and high conductivity (from aluminum wires), being mainstream design for overhead transmission lines.

What application scenarios is ACS suitable for?

ACS is mainly used for: reinforcing core of ACSR conductors, structural unit of OPGW cables, ground wire systems, long-span overhead lines. Any overhead application requiring high strength, corrosion resistance, and certain conductivity can consider ACS.

How is ACS's conductivity?

ACS conductivity is 20-30% IACS, mainly contributed by aluminum cladding. Although lower than pure aluminum (61% IACS) and CCA (62-68% IACS), it is sufficient for ACSR core and OPGW applications, and far higher than bare steel wire (about 2% IACS).

Figures

创建ACSR结构示意图

Fig. 1 ACSR结构示意图

创建OPGW结构图

Fig. 2 OPGW结构图

Tables

Table 1 物理性能

性能	ACS
密度 (g/cm³)	6.5-7.5
导电率 (% IACS)	20-30
热膨胀 (×10⁻⁶/°C)	13-15

Table 2 机械性能

性能	典型等级
抗拉强度 (MPa)	1100-1600
屈服强度 (MPa)	900-1300
延伸率 (%)	1-3

Table 3 ACSR配置

代号	ACS丝	Al丝	应用
Raven	1	6	轻载
Penguin	7	18	标准
Cardinal	7	30	重载

References

ASTM International ASTM B415: Aluminum-Clad Steel Wire ASTM (2020)

Authoritative References

ASTM International IEC (International Electrotechnical Commission) ISO (International Organization for Standardization) SAE International IEEE