Supplying dimension
Round bar from 30mm to 600mm Diameter
Flat and square bar from 30mm to 500mm Width
8mm to 300mm Thickness
*accept special shape
Forming option
Hot rolling or hot forged
Smelting process
EAF →VD→LF→ESR Electro-Slag Remelting
Surface option
Black
Grinding
Rough turned
Peeled
Polished
Quality
UT, size and surface for each pcs
Macrostructure
Ferritic Metallographic
Grain size
Nonmetallic inclusion
Etch test of tower sample
Delivery condition and hardness
Annealed or high temperature temper
| Annealed | high temperature temper | Hardness |
| 800 to 900 Celsius, slow | 700 to 770 Celsius, fast | Max 255 HBW |
*Accept +QT delivery condition
Equivalent Grade
| Chinese UNS | Chinese New Grade | Chinese Old Grade |
| S47450 | 18Cr11NiMoNbVN | 2Cr11NiMoNbVN |
Chemical component
| C | Si | Mn | P | S | Ni | Cr | Cu | Mo | V | Al | N | Nb |
| 0.15 to 0.20 | Max 0.50 | 0.50 to 0.80 | Max 0.020 | Max 0.015 | 0.30 to 0.60 | 10.00 to 12.00 | Max 0.10 | 0.60 to 0.90 | 0.20 to 0.30 | Max 0.03 | 0.040 to 0.090 | 0.20 to 0.60 |
Mechanical property and heat treatment
| Quench temperature | Temper temperature | Specified Plastic Elongation Strength | Tensile strength | Elongation | Reduction | Impact | Hardness |
| Min 1090 Celsius, oil | Min 640 Celsius, air | Min 760 Mpa | Min 930 Mpa | Min 12% | Min 32% | Min 20 KJ | 277 to 331 HBW |
