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Internal-Combustion Engine Valve Steel Bars
发布者: 发布时间:2014-9-25 9:12:57 阅读:

          Our company manufactures products refer to national standard (GB/T12733) such as 4Cr9Si2, 4Cr10Si2Mo, 21-4N, and 21-12N. After customers have used the products, found that every index achieves or over the national standard. We are in succession to successfully develop steel grades: 21-4NWNb, 23-8N, 21-2N, X85CrMoV18-2, X60CrMnMoVNbN21-10, and X50CrMnNiNbN21-9. This kind of steels has high intensity over 700℃(21-4NWNb,X60CrMnMoVNBN21-10 good tenacity and perfect corrosion resistance from gas23-8N. They are the ideal materials for manufacturing internal-combustion engine valves. The chemical composition of products is stable, performance is superior, life is durable and favored by lots of customers.

   Grades of Engine Valve Steels and Chemical Composition

序号

类别

牌号

化学成份%

C

Si

Mn

Ni

Cr

P

S

Mo

N

W

Nb

其他

1

5Cr21Mn9Ni4N

(21-4N)

0.48
-0.58

0.35

8.00
-10.00

3.25
-4.50

20.00
-22.00

0.040

0.030

 -

0.35-0.50

 -

 -

C+N≥0.90

2

2Cr21Ni12N

(21-12N)

0.15-0.28

0.75-1.25

1.00-
1.60

10.50-12.50

20.00
-22.00

0.035

0.030

 -

0.15-0.30

 -

 -

 

3

5Cr21Mn8Ni2N

(21-2N)

0.50-0.60

0.08-0.25

7.00-
9.50

1.50-2.75

19.25-
21.50

0.040

0.030

 -

0.22-0.40

 -

 -

 -

4

5Cr21Mn9Ni4Nb2WN

(21-4NWNb)

0.48-0.58

0.35

8.00-
10.00

3.50-4.50

20.00-
22.00

0.040

0.030

 -

0.35-0.50

0.80-1.20

1.80-2.50

 -

5

3Cr23Ni8Mn3N
(23-8N)

0.28-0.38

0.50-1.00

1.50-
3.50

7.00-9.00

22.00-
24.00

0.050

0.030

0.50

0.25-0.35

0.50

 -

 -

6

X60CrMnMoVNbN21-10

0.57-0.65

0.25

9.50-
11.50

1.50

20.00-
22.00

0.050

0.025

0.75-1.25

0.40-0.60

 

1.00-1.20

V:0.75-

1.00

7

X50CrMnNiNbN21-9

0.45-0.55

0.45

8.00-
10.00

3.50-5.00

20.00-
22.00

0.050

0.030

 

0.40-0.60

0.80-1.50

1.80-2.50

 

8

4Cr14Ni4W2Mo

0.40-0.50 ≤0.80 ≤0.70

13.00-15.00

13.00-
15.00

0.035

0.030

 0.26-0.40

-

2.00-2.75

-

-

9

3Cr20Ni11Mo2PB
(20-11PB)

0.25-0.35 ≤0.50 ≤1.20

10.00-12.00

19.00-
21.00

0.18-0.25

0.030

 1.80-2.50

≤0.07

-

-

B:0.001-0.01

10

4Cr9Si2

0.35-0.50

2.00-3.00

0.70

0.60

8.00-
10.00

0.035

0.030

 -

 -

 -

 -

 -

11

4Cr10Si2Mo

0.35-0.45

1.90-2.60

0.70

0.60

9.00-
10.50

0.035

0.030

0.70-0.90

 -

 -

 -

 -

12

X85CrMoV18-2

0.80-0.90

1.00

1.50

 -

16.50-
18.50

0.040

0.030

2.00-2.50

 -

 -

 -

V:0.30-

0.60

13

5Cr8Si2

0.45-0.55

1.00-2.00

0.60

0.60

7.50-
9.50

0.030

0.030

 -

 -

 -

 -

 

14

4(5)Cr9Si3

0.40-0.50

2.70-3.30

0.80

-

8.00-10.00

0.040

0.030

 -

 -

 -

 -

 -

15

4Cr9Si2

0.35-0.50

2.00-3.00

0.70

0.60

8.00-10.00

0.035

0.030

 -

 -

 -

 -

 -

16

422S

 -

 -

 -

 -

 -

 -

 -

 -

 -

 -

 -

 -

17

高温合金

Inconel 751

 -

 -

 -

 -

 -

 -

 -

 -

 -

 -

 -

 -

18

80A

 -

 -

 -

 -

 -

 -

 -

 -

 -

 -

 -

 -

 

牌号

热处理进度(ºC)

力学性能

硬度HB

抗拉强度Mpaσb

屈服强度Mpa

σ0.2

伸长率%
δ5

收缩率%

ψ

5Cr21Mn9Ni4N
(21-4N)

固溶1100-1200快冷
时效730-780空冷

950

580

8

10

280-380

2Cr21Ni12N
(21-12N)

固溶1100-1200快冷
时效700-800空冷

820

430

26

20

234-269

5Cr21Mn8Ni2N
(21-2N)

固溶1100-1150急冷
时效730-780空冷

880

490

8

-

280-380

5Cr21Mn9Ni4Nb2WN

(21-4NWNb)

固溶1100-1200快冷
时效730-780空冷

950

580

8

10

280-380

3Cr23Ni8Mn3N

(23-8N)

固溶1150-1700水冷
时效800-830空冷

850

550

20

30

234-380

X60CrMnMoVNbN21-10

固溶1180-1200空冷
时效650-700空冷

1000-1250

800

8

10

 

X50CrMnNiNbN21-9

固溶1160-1200快冷
时效760-815空冷

950-1150

580

12

15

280-380

4Cr9Si2

淬火1020-1040油冷
回火700-780油冷

885

590

19

50

204-269

4Cr10Si2Mo

淬火1020-1040油冷
回火720-760空冷

885

685

10

35

204-269

X85CrMoV18-2

淬火1100-1200油冷
回火730-780空冷

1000-1200

800

7

12

296-355

5Cr8Si2

淬火1050-1080油冷
回火700-800急冷

885

685

15

35

204-269

4Cr9Si3

淬火980-1050油冷
回火700-850急冷

930

685

15

35

204-269

 
 

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