Welcome to BEBON INTERNATIONAL CO.,LTD
Keyword :
Tel : +86-371-86151827
skype : bebonchina
E-mail : bb@bebonchina.com
Current position: BEBON international > Selling list>

ASTM 440A , 440A stainless steel ,ASTM 440A steel

ASTM Grade 440A is capable of attaining, after heat treatment, the highest strength, hardness and wear resistance of all the stainless alloys. Its very high carbon content is responsible for these characteristics, which make 440a particularly suited to such applications as ball bearings and valve parts.

ASTM Grades 440A stainless steel and 440B are identical except for slightly lower carbon contents (0.60 - 0.75% and 0.75 - 0.95% respectively); these have lower attainable hardnesses but slightly higher corrosion resistances. Although all three versions of this grade are standard grades, in practice 440C is more available than the A or B variants.

Composition ranges for 440A grade stainless steels.

Grade

C

Mn

Si

P

S

Cr

Mo

Ni

N

440A

min.

max.

0.65

0.75

-

1.00

-

1.00

-

0.040

-

0.030

16.00

18.00

-

0.75

-

-

Mechanical properties of 440A grade stainless steels.

Tempering Temperature (°C)

Tensile Strength (MPa)

Yield Strength 0.2% Proof (MPa)

Elongation (% in 50mm)

Hardness Rockwell (HR C)

Impact Charpy V (J)

Annealed*

758

448

14

269HB max#

-

204

2030

1900

4

59

9

260

1960

1830

4

57

9

316

1860

1740

4

56

9

371

1790

1660

4

56

9

Bebon International is a professional ASTM 440A stainless steel exporter and a steel Stockist in china. Any need in ASTM 440A stainless steel Chemical Composition ,Mechanical Properties and price , please feel free to contact us by email or calling to us.

Source:

Tags:

Related Products
ADD:Headquarters Enterprise Base, Ruida Road,
Zhongyuan District, Zhengzhou City, 450000,China
TEL: 0086-371-86151827 ,0086-371-86151527
FAX: 0086-371-86011881
E-MAIL: bb@bebonchina.com
Website : www.bebonchina.com
MESSAGE