Handan Iron and Steel X65M Hot Rolled Coil Product Specification
X65M是一种高强度管线钢，专为石油、天然气等流体的输送管道设计。"X"代表管线钢，"65"表示最小屈服强度为65ksi(约450MPa)，"M"通常表示采用热机械轧制(TMCP)工艺。邯钢生产的X65M热轧卷板以其高强度、高韧性和优良的焊接性能，成为长距离、高压输送管道的优选材料。
X65M is a high-strength pipeline steel specially designed for transportation pipelines of fluids such as oil and natural gas. "X" represents pipeline steel, "65" indicates a minimum yield strength of 65 ksi (approximately 450 MPa), and "M" typically denotes the use of Thermo-Mechanical Control Process (TMCP). Handan Iron and Steel's X65M hot rolled coil, with its high strength, high toughness, and excellent welding performance, is the preferred material for long-distance, high-pressure transmission pipelines.
邯钢通过洁净钢冶炼技术和精确的成分控制，确保X65M钢材具有优良的力学性能和抗腐蚀能力。邯钢生产的X65MS采用超低C、低P、低S、低Mn的成分设计，并添加抗腐蚀元素Cu、Ni，显著降低了钢材的HIC(氢致开裂)敏感性。
| 元素 | 含量范围(wt%) | 作用 |
|---|---|---|
| 碳(C) | 0.08%~0.15% | 保证强度,低碳设计提高焊接性 |
| 锰(Mn) | ≤1.60% | 提高淬透性和抗变形能力 |
| 磷(P) | ≤0.04% | 严格控制杂质,减少脆性 |
| 硫(S) | ≤0.05% | 严格控制杂质,减少脆性 |
| 硅(Si) | 0.17%~0.37% | 增强强度与韧性 |
| 铌(Nb) | ≤0.06% | 细化晶粒,提升耐蚀性 |
| 钒(V) | ≤0.06% | 细化晶粒,提升耐蚀性 |
| 钛(Ti) | ≤0.06% | 细化晶粒,提升耐蚀性 |
| 铜(Cu) | 适量添加 | 提高抗腐蚀性能 |
| 镍(Ni) | 适量添加 | 提高抗腐蚀性能 |
Handan Iron and Steel ensures excellent mechanical properties and corrosion resistance of X65M steel through clean steel smelting technology and precise composition control. The X65MS produced by Handan Iron and Steel adopts a composition design with ultra-low C, low P, low S, and low Mn, and adds anti-corrosion elements Cu and Ni, significantly reducing the HIC (hydrogen-induced cracking) sensitivity of the steel.
| Element | Content Range (wt%) | Function |
|---|---|---|
| Carbon (C) | 0.08%~0.15% | Ensures strength, low carbon design improves weldability |
| Manganese (Mn) | ≤1.60% | Improves hardenability and deformation resistance |
| Phosphorus (P) | ≤0.04% | Strictly controlled impurity, reduces brittleness |
| Sulfur (S) | ≤0.05% | Strictly controlled impurity, reduces brittleness |
| Silicon (Si) | 0.17%~0.37% | Enhances strength and toughness |
| Niobium (Nb) | ≤0.06% | Refines grains, improves corrosion resistance |
| Vanadium (V) | ≤0.06% | Refines grains, improves corrosion resistance |
| Titanium (Ti) | ≤0.06% | Refines grains, improves corrosion resistance |
| Copper (Cu) | Appropriate addition | Improves corrosion resistance |
| Nickel (Ni) | Appropriate addition | Improves corrosion resistance |
X65M热轧卷板具有优异的综合力学性能，能满足高压输送管道对材料强度和韧性的要求。值得一提的是,邯钢生产的X65MS钢板在-10℃落锤撕裂韧性测试中剪切面积可达100%,在-20℃下剪切面积大于90%，表现出优异的抗动态撕裂性能。
| 性能指标 | 要求值 | 试验条件/备注 |
|---|---|---|
| 屈服强度 | ≥450MPa | 部分标准要求490~587MPa |
| 抗拉强度 | ≥570MPa | 可达550~810MPa |
| 延伸率 | ≥16% | 可达24%~33% |
| 屈强比 | ≤0.93 | 平衡强度与韧性 |
| 冲击韧性 | ≥120J(-20℃) | 夏比冲击试验 |
| 硬度 | - | 根据状态不同而变化 |
X65M hot rolled coil has excellent comprehensive mechanical properties that meet the requirements of high-pressure transmission pipelines for material strength and toughness. It is worth mentioning that the X65MS steel plate produced by Handan Iron and Steel can achieve a shear area of 100% in the -10°C drop-weight tear test, and a shear area greater than 90% at -20°C, demonstrating excellent resistance to dynamic tearing.
| Property Indicator | Required Value | Test Conditions/Remarks |
|---|---|---|
| Yield Strength | ≥450MPa | Some standards require 490~587MPa |
| Tensile Strength | ≥570MPa | Can reach 550~810MPa |
| Elongation | ≥16% | Can reach 24%~33% |
| Yield Ratio | ≤0.93 | Balances strength and toughness |
| Impact Toughness | ≥120J(-20℃) | Charpy Impact Test |
| Hardness | - | Varies depending on condition |
邯钢采用新型控制轧制和控制冷却工艺(TMCP):
这种工艺确保了钢材获得细小的晶粒组织(平均晶粒直径约4.2~7.8μm)，针状铁素体+贝氏体的微观组织，以及无带状组织的特点，从而具有优异的耐HIC性能。
Handan Iron and Steel adopts a new controlled rolling and controlled cooling process (TMCP):
This process ensures that the steel obtains a fine grain structure (average grain diameter about 4.2~7.8μm), a microstructure of acicular ferrite + bainite, and the characteristics of no banded structure, thus having excellent HIC resistance.
邯钢生产的X65M热轧卷板具有以下突出特点:
The X65M hot rolled coil produced by Handan Iron and Steel has the following outstanding characteristics:
X65M热轧卷板主要应用于:
X65M hot rolled coil is mainly used in:
邯钢对X65M热轧卷板实施严格的质量控制，包括:
邯钢生产的20-30mm大壁厚X65MS钢板抗HIC性能良好，裂纹长度率(CLR)≤15%，裂纹宽度率(CTR)≤5%，裂纹敏感率(CSR)≤2%，完全符合API 5L标准要求。
Handan Iron and Steel implements strict quality control for X65M hot rolled coil, including:
The 20-30mm large wall thickness X65MS steel plate produced by Handan Iron and Steel has good HIC resistance, with crack length rate (CLR) ≤15%, crack thickness rate (CTR) ≤5%, crack sensitivity rate (CSR) ≤2%, fully meeting the requirements of API 5L standard.