Round bar from 30mm to 600mm Diameter
Flat and square bar from 30mm to 500mm Width
8mm to 300mm Thickness
*accept special shape
Hot rolling or hot forged
EAF →VD→LF→ESR Electro-Slag Remelting
Black
Grinding
Rough turned
Peeled
Polished
UT, size and surface for each pcs
Macrostructure
Ferritic Metallographic
Grain size
Nonmetallic inclusion
Etch test of tower sample
Annealed or high temperature temper
| Annealed | high temperature temper | Hardness |
| 800 to 900 Celsius, slow | 700 to 770 Celsius, fast | Max 223 HBW |
*Accept +QT delivery condition
| Chinese UNS | Chinese New Grade | Chinese Old Grade | JIS | ASTM SAE AISI | EN BS DIN | EN BS DIN |
| S42023 | 20Cr13 | 2Cr13 | SUS420 | 420 | 1.4021 | X20Cr13 |
| C | Si | Mn | P | S | Ni | Cr | Cu |
| 0.16 to 0.24 | Max 0.60 | Max 0.60 | Max 0.030 | Max 0.020 | Max 0.60 | 12.00 to 14.00 | Max 0.30 |
| Type | Quench temperature | Temper temperature | Specified Plastic Elongation Strength | Tensile strength | Elongation | Reduction | Impact | Hardness |
| 1 | 950 to 1020 Celsius, air, oil | 660 to 770 Celsius, oil, air, water | Min 490 Mpa | Min 665 Mpa | Min 16 % | Min 50% | Min 27 KJ | 212 to 262 HBW |
| 2 | 980 to 1030 Celsius, oil | 640 to 720 Celsius, air | Min 590 Mpa | Min 735 Mpa | Min 15 % | Min 50% | Min 27 KJ | 229 to 277 HBW |