SPW Product Catalogue 2019

WELDING GUIDE
STEEL SPECIFICATIONS CONT.
6
QUENCHED AND TEMPERED STEELS.
Structural and Abrasion Resistant Grades.
Chemical Analysis %
Properties Steel Designation C Mn Si Cr Ni Mo S Other Weldability Reference Number
BISALLOY Q & T STEELS (Australia).
Yield Stress:
500MPa Bisalloy 60 0.16-0.18 1.10-1.40 0.20 0.20-0.90 --- 0.20 0.003 B: 0.001 13
600MPa Bisalloy 70 Ti: 0.02
620-690MPa Bisalloy 80/80PV
Hardness:
320-360HB Bisplate 320 0.18 1.15 0.40 0.85 --- 0.20 --- B: 0.002 13
360-400HB Bisplate 360 Ti: 0.03
400-460HB Bisplate 400 0.28 0.50 0.35 0.96 --- 0.15 --- B: 0.002 13
Ti: 0.04
IMPORTED Q & T STEELS (JAPAN & USA).
Yield Stress:
550MPa HY80 0.14 0.30 0.25 1.60 2.8 0.40 13
690MPa
HY100
690MPa USST1 0.16 0.85 0.30 0.57 0.90 0.50 B: 0.004 13
V: 0.04
Cu: 0.30
690MPa USST1 Type A 0.18 0.90 0.30 0.55 0.20 --- B: 0.001 13
V: 0.04
450MPa Welten 60 0.11 1.22 0.45 0.17 V: 0.04 13
690MPa Welten 80C 0.10 0.85 0.22 0.80 0.45 B: 0.001 13
V: 0.04
Cu: 0.28
690MPa Welten 80E 0.18 0.90 0.23 0.40 B: 0.001 13
V: 0.03
Cu: 0.25
Hardness:
320HB min Welten AR 320 0.18 1.10 0.25 0.70 0.35 B: 0.002 13
V: 0.04
Cu: 0.35
360HB min Welten AR 360C 0.18 1.10 0.25 0.90 0.35 B: 0.002 13
V: 0.04
Cu: 0.35
477HB min Welten AR 500 0.30 1.20 0.40 0.60 0.10 B: 0.003 13
Cu: 0.28
* Dependent on plate thickness.
Preheat recommendations for Q & T Steels - Table 2.
Q & T Steel Grade < 13mm > 13mm < 25mm >25mm < 50mm > 50mm
MINIMUM PREHEAT TEMPERATURE (°C) ( assuming high joint restraint )
High Strength Structural Grades.
450 MPa minimum Yield Stress 10 25 75 100
620 MPa minimum Yield Stress 50 100 125 150
680 MPa minimum Yield Stress 50 100 125 150
Abrasion Resistant Grades.
320 HB 50 100 125 100
360 HB 50 100 125 150
500 HB 100 150 150 ---
MAXIMUM INTERPASS TEMPERATURE (°C)
All Grades 150 175 200 220
MAXIMUM ARC HEAT INPUT (Kj / mm)
All Grades 2.5 3.5 4.5 5.0
TECHNICAL
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