1 About Tedrail
Terail is a professional manufacturer of railway products located in JiangSu China. We can supply most of Bogie parts, Wagon parts, Coach parts, Locomotive parts based on customer requirements. Expert in design, manufacture, and inspection, Tedrail can offer you guaranteed products and also complete solution of railway industry.
2 What axle steel grades and standards Tedrail support?
Tedrail support and confirm to a wide range of axle standards and steel grade.
Standard Material Heat Treatment Approach
TB/T 2945-1999 LZ50 N(Twice) followed by T
AAR M-101-2011 AAR Grade F N(Twice) followed by T
AAR Grade G Q followed by T
AAR Grade H N,Q followed by T
EN 13261-2009 EA1N N
EA1T Q followed T
EA4T Q followed T
UIC 811-1-1987 A1 (U),N,T
Less common standards:
JIS E 4502
Customized technical specification can be met.
REF: N-Normalizing T-Tempering Q-Quenching U-Untreated
Chemical Analysis of Wide-used Steel in Different Standards
LZ50 Elements C Mn Si P S Cr Ni Cu T.Al
Percentage% 0.47-0.57 0.60-0.90 0.17-0.40 ≤0.03 ≤0.03 ≤0.30 ≤0.30 ≤0.25 ≥0.02
Tolerance ±0.02 ±0.03 ±0.02 +0.005 +0.005
AAR GradeF Elements C Mn Si P S V
Percentage% 0.45-0.59 0.75-1.00 ≥0.15 ≤0.045 ≤0.05 0.02-0.08
Tolerance ±0.03 -0.02 +0.008 +0.008 ±0.001
EA1N Elements C Mn Si P S Cr Ni Cu V Mo
Percentage% ≤0.40 ≤1.20 ≤0.50 ≤0.02 ≤0.02 ≤0.30 ≤0.30 ≤0.30 ≤0.06 ≤0.08
Tolerance +0.005 +0.005
A1 Elements C Mn Si P S Cr Ni Cu V Mo
Percentage% ≤0.37 ≤1.12 ≤0.46 ≤0.04 ≤0.04 ≤0.30 ≤0.30 ≤0.30 ≤0.05 ≤0.05
Tolerance +0.03 +0.08 +0.04
3 The Manufacturing
The mail process of axle manufacturing are the reducing from ingot or bloom, heat-treatment , tensile and ultrasonic test, machining and coating. From the bloom check to tensile or ultrasonic test, Tedrail will take a serious control of the manufacturing to guarantee the quality of axle.
4 How do we guarantee the quality?
Experienced Design Engineering
After our talented engineers get your drawings, they'll quickly grasp it and point out the key-points.
Mature Workshop Directing
Mature workshop directing will make sure the manufacturing process precisely control the quality so that the customer's demands will be confirmed.
Comprehensive Tests and Inspections
Tedrail will carry out comprehensive tests to make sure the quality of Axle. Any test in relevant production procedure must be approved or the axle will be eliminated.
Tensile and Impact Test with Mechanical Analysis
Macrographic /Macroscopic Test
Appearance and Dimensions Inspection
Serious Quality Assurance
After the production is done, our quality assurance team will double-check every axle to guarantee that the axle meet the requirements of clients.