03. МАРКА И ХИМИЧЕСКИЙ СОСТАВ СРЕДНЕ- И ВЫСОКОУГЛЕРОДИСТЫХ СТАЛЕЙ

Таблица 2

ГОСТ

Марка стали

МАССОВАЯ ДОЛЯ ЭЛЕМЕНТОВ, %

углерод

марганец

кремнии

фосфор

сера

хром

никель

медь

не более

ГОСТ 1050-88

2кп

0.09-0.15

0.25-0.50

не более

0.04

0.05

0.30

0.30

0.30

3кп

0.14-0.22

0.30-0.60

0.05

"

"

"

"

"

3сп

0.14-0.22

0.40-0.60

0.15-0.30

"

"

"

"

"

3пс

0.14-0.22

0.40-0.65

0.05-0.15

"

"

"

"

"

08кп

0.05-0.11

0.25-0.50

не более 0.03

0.035

0.40

0.10

0.25

0.25

35

0.32-0.40

0.40-0.70

0.45

0.030

0.030

0.10

0.10

0.15

45

0.42-0.50

"

"

"

"

"

"

"

50

0.47-0.55

"

"

"

"

"

"

"

55

0.52-0.60

"

"

"

"

"

"

"

10кп

0.07-0.14

"

007

"

"

0.15

"

"

20

0.17-0.24

0.35-0.65

0.17-0.37

"

"

0.25

"

"

ТУ 14-1-5317-95

35

0.32-0.40

0.40-0.70

0.45

0.030

0.030

0.10

0.10

0.15

40

0.37-0.45

"

"

"

"

"

"

"

45

0.42-0.50

"

"

"

"

"

"

"

50

0.47-0.55

"

"

"

"

"

"

"

55

0.52-0.60

"

"

"

"

"

"

"

60

0.57-0.65

"

"

"

"

"

"

"

65

0.62-0.70

"

"

"

"

"

"

"

65

0.62-0.70

"

"

"

"

"

"

"

70

0.67-0.75

"

"

"

"

"

"

"

75

0.72-0.80

"

"

"

"

"

"

"

80

0.77-0.85

"

"

"

"

"

"

"

85

0.82-0.90

"

"

"

"

"

"

"

ГОСТ 1435-74

У7А

0.65-0.74

0.17-0.28

0.17-0.33

0.025

0.018

0.20-0.4

0.25

0.20

У8А

0.75-0.84

"

"

"

"

"

"

"

У9А

0.85-0.94

"

"

"

"

"

"

"

У10А

0.95-1.04

"

"

"

"

"

"

"

ГОСТ 14959-79

65Г

0.62-0.70

0.7-1.0

0.17-0.37

0.035

0.035

0.15

0.15

"

ГОСТ 2246-70

Св08Г2С

0.05-0.11

1.8-2.10

0.70-0.95

0.030

0.025

0.20

0.25

"

ГОСТ 10543-82

30ХГСА

0.27-0.35

0.80-1.1

0.9-1.20

0.025

0.025

0.80-1.1

0.40

"