Development of Nb Microalloying 400 MPa Ⅲ Grade Steel Reinforced Bar

任一峰; 吴小林; 承江; 顾国明

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Development of Nb Microalloying 400 MPa Ⅲ Grade Steel Reinforced Bar

更新时间：2026-01-21

- Development of Nb Microalloying 400 MPa Ⅲ Grade Steel Reinforced Bar
- Special Steel Vol. 26, Issue 2, Pages: 60-61(2005)
- 作者机构：
  
  江阴兴澄特种钢铁有限公司，江阴,214400
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：24 December 2004，
  
  Online First：01 June 2023，
  
  Published：01 June 2005
- 稿件说明：
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任一峰, 吴小林, 承江, et al. Development of Nb Microalloying 400 MPa Ⅲ Grade Steel Reinforced Bar[J]. Special Steel, 2005, 26(2): 60-61.
DOI：

任一峰, 吴小林, 承江, et al. Development of Nb Microalloying 400 MPa Ⅲ Grade Steel Reinforced Bar[J]. Special Steel, 2005, 26(2): 60-61. DOI：

摘要

采用40 t EBT电弧炉40 t LF 150mm × 150mm方坯连铸工艺

开发了成分(%)为: 0.17～0.25C，1.20～1.45Mn，0.02～0.04Nb的400 MPaⅢ级Φ10～25mm铌微合金化钢筋。钢筋的力学性能为σ

420～490 MPa

590～680 MPa ;δ

24%～30%

自然时效8周后屈服强度下降较少。生产的Nb微合金化400 MPa Ⅲ级钢筋符合GB1499-1998标准要求。用0.02 %～0.04%Nb取代0.05%～0.10%V时，吨钢成本显著降低。

Abstract

The φ10~25 mm reinforced bars of Nb microalloying 400 MPa Ⅲ Grade steel - 0.17~0.25C

1.20~1.45Mn

0.02～0.04Nb have been developed by 40 t EBT are furnace- 40 t LF- 150 mm×150 mm billet concasting process. The mechanical properties of reinforced bars were σ

420~490 MPa

590~680 MPa

24%～30%

and the yield strength decreasing was minor after nature aging for 8 weeks. The produced Nb microalloying 400 MPa Ⅲ grade steel reinforced bars were up to the requirement of CB 1499- 1998 standard and the production cost was obviously decreasing by 0.02%～0.04%

Nb to replace 0.05%～0.10% V.

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