进步
QIDAMT · CARBON STEEL ROUND BAR
Q355B碳钢圆钢 – 低合金结构棒
Hot-rolled Q355B (16锰) low-alloy high-strength round bar for shafts, 螺栓, structural components and machinery parts.
Q355B carbon steel round bar is a hot-rolled low-alloy high-strength structural steel (former 16Mn) 和 355 MPa minimum yield. It is widely used in engineering machinery, 桥梁, ships and construction where Q235 strength is not enough.
主要优势
高力量
355 兆帕产量, ~20 % stronger than Q235B.
Good Toughness
B-grade Charpy test at +20 ℃.
可焊接
Excellent welding for structural connections.
成本效益
Lower cost than alloy or stainless equivalents.
化学成分 (Q355B)
| 元素 | C | 和 | 锰 | 磷 | S |
|---|---|---|---|---|---|
| 内容 % | ≤ 0.24 | ≤ 0.55 | 1.00 – 1.60 | ≤ 0.035 | ≤ 0.035 |
机械性能
- 抗拉强度 (σb): 470 – 630 兆帕
- 屈服强度 (σs): ≥ 355 兆帕 (≤ 16 毫米厚)
- 伸长 (d): ≥ 21 %
- 影响 (Charpy V): ≥ 34 J at +20 ℃
标准尺寸
| 范围 | 范围 |
|---|---|
| 直径 | 16 – 300 毫米 |
| 长度 | 3 – 6 米 (切成一定长度) |
| 表面 | 黑色的 / 去皮的 / 明亮的 |
| 标准 | 国标/T 1591 / equivalent ASTM A572 Gr.50 |
应用领域
Q355B round bar is used for shafts, bolts and nuts, 齿轮, crane hooks, bridge components, 卡车车架, structural columns and heavy machinery parts. For general Q235B round bar see our Q235B round bar; for high-strength plate see Q355B plate.
加工 & 包装
切割, 转动, peeling and CNC machining available. Bars are strapped in bundles on wooden pallets.
