Technical conditions for plates of 16Mo3

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Posted On

4-Dec-13

Product Details

Dimension, Shape, Weight and Permissible Deviation
The dimension, shape, weight and permissible deviation shall meet the requirements of EN10029.
4. Technical conditions
4.1 Chemical composition (Ladle analysis)
The chemical composition of plates shall be accordance with the following table 1.
Table 1 Chemical composition (Ladle analysis)
C Si Mn P S Cr Cu Mo N Ni
0.12- 0.20 Max 0.35 0.40- 0.90 Max 0.025 Max 0.010 Max 0.30 Max 0.30 0.25- 0.35 Max 0.012 Max 0.30

4.2 Mechanical properties
The mechanical properties of 16Mo3 shall meet the requirement as table 2.
Table 2 Tensile properties
Thickness mm Yield strength MPa Tensile strength MPa +20C Akv (J) Elongation %
8-60 Min 275 440-590 Min 31J Min22
60-100 Min 260 440-590 Min 31J Min22
100-150 Min 240 430-590 Min 31J Min22
150-250 Min 220 320-570 Min 31J Min22

4.3 SWHT: The optimized SWHT technology is as follows: heating at 610℃+/-10℃ for 7h, then followed by cooling in furnace to 400℃, then for air cooling.
4.4 Minimum values for the proof strength Rp0.2 at elevated temperatures shall meet the requirements per table 4.

Table 4 High temp Tensile properties
Test TEMP Thickness mm 300℃ 350℃ 400℃ 450℃
Rp0.2
Min (MPa) 8-60 194 175 159 147
61-100 183 165 150 139
101-150 169 153 139 129
151-250 155 140 127 118

4.5 Ultrasonic inspection
Plates shall be ultrasonic inspected per EN10160-1999 S2E2.

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