S20C / 1020
Used to manufacture require high toughness and low stress machinery parts, such as lever, shaft sleeve, pin, pull rod, grab hook, etc. Used to manufacture tube and pipe parts which used in pressure <600Mpa, temperature <450° C and non corrosive. In the common and agricuture industry, used to manufacture carburizing and carbonitriding parts which only require high surface hardness.
Specification
| TAIWAN - CNS |
CHINA - GB |
JAPAN - JIS |
USA - ASTM |
GERMANY - DIN |
| S20C |
20 |
S20C |
1020 |
C20, Ck20, Cf20 |
Product Specification
| Shape |
Size |
| Round Bar |
13 15 16 17 18 19 20 21 22 23 24 25 26 27 28 30 32 34 36 38 40 42 44 45 46 48 50 53 55 57 60 62 65 67 70 72 75 78 80 82 85 87 90 92 95 100 103 105 110 115 120 125 130 135 140 145 150 155 160 165 170 175 180 185 190 200 210 220 230 240 250 260 270 280 290 295 305 315 325 335 345 355 365 375 385 395 405 415 425 435 445 455 465 475 485 495 505 515 525 535 545 555 565 575 585 595 605 |
Product Feature
Mechanical parts and structual steel.
Heat treatment conditions
| Annealing |
Normalize |
Quench |
Tempering |
| 880 Furnace cooling |
880~ 870 Air cooling |
820~ 870 Water cooling |
550~ 650 prompt cooling |
Mechanical properties
(1) Material
| Tensile strength kgf/mm² |
Yield strength kgf/mm² |
Elongation % |
Cross section reduction rate % |
Hardness Hb |
| ≧58 |
≧35 |
≧20 |
≧45 |
167~229 |
(2) After heat treatment
| Tensile strength kgf/mm² |
Yield strength kgf/mm² |
Elongation % |
Cross section reduction rate % |
Hardness Hb |
| ≧70 |
≧50 |
≧17 |
≧45 |
201~269 |