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Q/BQB 190-2018 (QBQB 190-2018)

Chinese Standard: 'Q/BQB 190-2018'
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BASIC DATA
Standard ID Q/BQB 190-2018 (Q/BQB190-2018)
Description (Translated English) (Rail blank for rail vehicles)
Sector / Industry Chinese Industry Standard
Classification of Chinese Standard QBQ
Word Count Estimation 4,447
Administrative Organization Baoshan Iron and Steel Co., Ltd.

Q/BQB 190-2018
BQB
ENTERPRISE STANDARD OF BAOSHAN
IRON & STEEL CO., LTD.
Rail blank for rail vehicles
轨道车辆用车轴坯
Issued on. February 01, 2018
Issued by. Baoshan Iron & Steel Co., Ltd.
Table of Contents
Self-commitment ... 3 
Technical Index 1 ... 4 
Document for index requirements of Technical Index 1 ... 5 
Self-commitment
The contents of Q/BQB 190-2018 “Rail blank for rail vehicles”, prepared and
published by our company, meet the requirements of relevant national laws and
regulations, mandatory standards, and related industrial policies; and in
accordance with the prescribed procedures, are approved for release by the
legal representative of the enterprise. The products produced by our company
meet the technical requirements stipulated in this Standard. The standard
number is clearly indicated on the corresponding product packaging. Our
company is responsible for the truthfulness, accuracy, and legality of the
declared public information, and assumes full legal responsibility for the
consequences of the implementation of this Standard.
Baoshan Iron & Steel Co., Ltd.
February 1, 2018
Technical Index 1
Index name. Main indexes such as chemical composition and
mechanical properties
Index requirements. Main indexes such as chemical composition and
mechanical properties, and test methods are shown
in the attachment
(See Page 4 for details)

Q/BQB 190-2018
(Rail blank for rail vehicles)
Baoshan Iron and Steel Co., Ltd. Enterprise Standard
Rail blank for rail vehicles
Published on.2018-02-01
Baoshan Iron and Steel Co., Ltd. released
Self-commitment
Regulations, mandatory standards and related industrial policies, and approved by the corporate legal representative in accordance with the prescribed procedures
. I
The products produced by the company meet the technical requirements stipulated in this standard, and the standard number is clearly indicated on the corresponding product packaging. Our company
It is responsible for the truthfulness, accuracy and legality of the public information, and assumes full legal responsibility for the consequences of the implementation of this standard.
Baoshan Iron and Steel Co., Ltd.
2018-02-01
Technical indicator 1
Indicator name. Main indicators such as chemical composition and mechanical properties
Indicator requirements. The main indicators and test methods such as chemical composition and mechanical properties are shown in the attachment.
(See page 4 for details)
Table 2
Brand
Chemical composition (mass fraction) a/%
C Si Mn PS Cr Ni Cu Mo V Alt
LZ50
0.49~
0.54
0.17~
0.40
0.70~
0.90
0.020
0.015
≤0.30 ≤0.30 ≤0.25 ≤0.08 -
0.020~
0.040
EA1N
0.32~
0.38
0.15~
0.45
0.90~
1.15
0.015
0.010
≤0.30 ≤0.30 ≤0.30 ≤0.08 ≤0.06 -
a All grades [H] ≤ 2.0 ppm, [O] ≤ 20 ppm.
Note. The LZ50 is the grade in the standard TB/T 2945. EA1N is the grade of the standard EN 13261.
Table 4
Brand
Mechanical properties
tensile strength
Rm/MPa
Yield strength a, b
MPa
Elongation after break
A/%
rate of reduction in area
Z/%
Shock absorption energy
KU2/J
LZ50 ≥ 610 ≥ 345 ≥ 19 ≥ 35 -
EA1N 550~650 ≥320 ≥22 -
≥30 (longitudinal)
≥25 (horizontal)
a LZ50 grade is ReL and EA1N grade is ReH.
b When the yielding phenomenon is not obvious, replace ReL or ReH with the specified plastic elongation strength RP0.2.
Table 6
Serial number test item sampling quantity sampling method test method
1 chemical composition (melting analysis) 1/furnace GB/T.20066
Related standard: Q/BQB 191-2018    Q/BQB 192-2018
Related PDF sample: Q/BQB 191-2018    Q/BQB 192-2018