S46020 21Cr12MoV 2Cr12MoV Stainless Steel For Steam Turbine Blade
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 |
| 880 to 930 Celsius, slow | 750 to 770 Celsius, fast | Max 255 HBW |
*Accept +QT delivery condition
Equivalent Grade
| Chinese UNS | Chinese New Grade | Chinese Old Grade |
| S46020 | 21Cr12MoV | 2Cr12MoV |
Chemical component
| C | Si | Mn | P | S | Ni | Cr | Cu | Mo | V |
| 0.18 to 0.24 | 0.10 to 0.50 | 0.30 to 0.80 | Max 0.030 | Max 0.020 | 0.30 to 0.80 | 11.00 to 12.50 | Max 0.30 | 0.80 to 1.20 | 0.25 to 0.35 |
Mechanical property and heat treatment
| Type | Quench temperature | Temper temperature | Specified Plastic Elongation Strength | Tensile strength | Elongation | Reduction | Impact | Hardness |
| 1 | 1020 to 1070 Celsius, oil | Min 650 Celsius, air | Min 700 Mpa | 900 to 1050 Mpa | Min 13 % | Min 35% | Min 20 KJ | 265 to 310 HBW |
| 2 | 1020 to 1050 Celsius, oil | 700 to 750 Celsius, air | 590 to 735 Mpa | Max 930 Mpa | Min 15 % | Min 50% | Min 27 KJ | 241 to 285 HBW |
