Alloy Steel

Alloy Steel

Alloy steel is steel that is alloyed with a variety of elements in total amounts between 1.0% and 50% by weight to improve its mechanical properties. Alloy steels are broken down into two groups: low-alloy steels and high-alloy steels. The difference between the two is somewhat arbitrary: Smith and Hashemi define the difference at 4.0%, while Degarmo, et al., define it at 8.0%.Most commonly, the phrase "alloy steel" refers to low-alloy steels.

The following is a range of improved properties in alloy steels (as compared to carbon steels): strength, hardness, toughness, wear resistance, corrosion resistance, hardenability, and hot hardness. To achieve some of these improved properties the metal may require heat treating.

ALLOY STEEL SPECIFICATIONS

ASTM A 179
ASTM A 214
ASTM A 192
ASTM A 209/T1
ASTM A 209/T1a
ASTM A 209/T1B
ASTM A 210/A-1
ASTM A 210/C

MW
MW
MW
MW
MW
MW
MW
MW

0.06-018
0.18MAX
0.06-0.18
0.10-0.20
0.15-0.25
0.14MAX
0.27MAX
0.35MAX

0.27-0.63
0.27-0.63
0.27-0.63
0.30-0.80
0.30-0.80
0.30-0.80
0.93MAX
0.29-1.06

0.048
0.050
0.048
0.045
0.045
0.045
0.048
0.048

0.048
0.050
0.048
0.045
0.045
0.045
0.058
0.058

-
-
0.25MAX
0.10-0.50
0.10-0.50
0.10-0.50
0.10MIN
0.10MIN

-
-
-
-
-
-
-
-

-
-
-
0.44-0.65
0.44-0.65
0.44-0.65 
-
-

325MIN
385MIN
325MIN
380MIN
365MIN
415MIN
415MIN
485MIN

180MIN
180MIN
180MIN
205MIN
195MIN
220MIN
255MIN
275MIN

35.0
35.0
35.0
30/22
30/22
30/22
30/22
30/22

Hardness 72 HRB MAX
Hardness 72 HRB MAX 
Hardness 77 HRB MAX 
Hardness 80 HRB MAX
Hardness 81 HRB MAX 
Hardness 77 HRB MAX 
Hardness 79 HRB MAX 
Hardness 89 HRB MAX

ASTM A 213/T2
ASTM A 213/T5
ASTM A 213/T11
ASTM A 213/T12
ASTM A 213/T22 

MW
MW
MW
MW
MW

0.10/0.20
0.15MAX
0.15MAX
0.15MAX
0.15MAX

0.30-0.61
0.30-0.60
0.30-0.60
0.30-0.61
0.30-0.60

0.045
0.030
0.030
0.045
0.030

0.045
0.030
0.030
0.045
0.030

0.10-0.30
0.50MAX
0.50-1.00 
0.50MAX
0.50MAX

0.50-0.81
4.00-6.00
1.00-1.50
0.80-1.25
1.90-2.60

0.44-0.65
0.44-0.65
0.44-0.65
0.44-0.65
0.87-1.13

415MIN
415MIN
415MIN
415MIN
415MIN

205MIN
205MIN
205MIN
220MIN
205MIN

30/22
30/22 
30/22
30/22
30/22

Hardness 85 HRB MAX
Hardness 85 HRB MAX
Hardness 85 HRB MAX
Hardness 85 HRB MAX
Hardness 85 HRB MAX

ASTM A 333/1
ASTM A 333/6
ASTM A 334/1
ASTM A 334/6

AW
AW
AW
AW

0.30MAX
0.30MAX
0.30MAX
0.30MAX

0.40-1.06
0.29-1.06
0.40-1.06
0.29-1.06

0.025
0.025
0.025
0.025

0.025
0.025
0.025
0.025

-
0.10MIN
-
0.10MIN

-
-
-
-

-
-
-
-

380MIN
415MIN
380MIN
415MIN

205MIN
240MIN
205MIN
240MIN

25/20
30/22
35/28
30/22

Impact AS-50F
FOR 40X10J/18/14
-50F 40X10J/18/14
90 HRB MAX

ASTM A 335/P1
ASTM A 335/P2
ASTM A 335/P5
ASTM A 335/P9
ASTM A 335/P11
ASTM A 335/P12
ASTM A 335/P22 

AW
AW
AW
AW
AW
AW
AW

0.10-0.20
0.10-0.20
0.15MAX
0.15MAX
0.15MAX
0.15MAX
0.15MAX

0.30-0.80
0.30-0.61
0.30-0.60
0.30-0.60
0.30-0.60
0.30-0.61
0.30-0.60

0.025
0.025
0.025
0.025
0.025
0.025
0.025

0.025
0.025
0.025
0.025
0.025
0.025
0.025

0.10-0.50
0.10-0.30
0.50MAX
0.25-1.00
0.50-1.00
0.50MAX
0.50MAX

-
0.50-0.81
4.00-6.00
8.00-10.00 1.00-1.50
0.80-1.25
1.90-2.60

0.44-0.65
0.44-0.65
0.45-0.65
0.09-1.10
0.44-0.65 
0.44-0.65
0.87-1.13

380MIN
380MIN
415MIN
415MIN
415MIN
415MIN
415MIN

205MIN
205MIN
205MIN
172MIN
205MIN
205MIN
205MIN

30/22
30/22
30/22
30/22
30/22
50/22 
30/22 

 

BS/3059/1/33
BS/3059/2/33
BS/3059/2/45
BS/3059/2/620

 

0.15MAX
0.15MAX
0.12-0.18
0.10-0.15

0.30-0.70
0.40-0.70
0.90-1.20
0.40-0.70

0.050
0.050
0.035
0.040

0.050
0.050
0.035
0.040

-
0.10-0.35
0.10-0.35
0.10-0.35

-
-
-
0.70-1.10

-
-
-
0.45-0.65 

324-441
324-441
441-560
441-618

186MIN
186MIN
245MIN
235MIN

25
21
22
22

 

DIN/17175/ST35.8
DIN/17175/ST45.8
DIN/17175/15MO3
DIN/17175/13CrMO44
DIN/17175/10CrM910 

 

0.17MAX
0.22MAX
0.12-0.20
0.10-0.18
0.15MAX

0.40MIN
0.45MIN
0.50-0.80
0.40-0.70
0.40-0.60

0.040
0.040
0.040
0.040
0.040

0.040
0.040
0.040
0.040
0.040

0.35MAX
0.10-0.35
0.10-0.35
0.10-0.35
0.15-0.50

-
-
-
0.70-1.60
2.0-2.5

-
-
0.25-0.35
0.40-0.50
0.9-1.10

340-441
441-540
441-540
441-570
441-570

235MIN
255MIN
284MIN
294MIN
294MIN

25
25
21
22
22

 

ASTM A 199/T5
ASTM A 199/T11
ASTM A 199/T22
ASTM A 199/T4
ASTM A 199/T7
ASTM A 200/T5
ASTM A 200/T11
ASTM A 200/T22
ASTM A 200/T4
ASTM A 200/T7
ASTM A 199/T9

MW
MW
MW
MW
MW
MW
MW
MW
MW
MW
MW

0.50-0.15
0.50-0.15
0.50-0.15
0.15MAX
0.15MAX
0.15MAX
0.50-0.15
0.50-0.15
0.50-0.15
0.15MAX
0.15MAX

0.30-0.60
0.30-0.60
0.30-0.60
0.30-0.60
0.30-0.60
0.30-0.60
0.30-0.60
0.30-0.60
0.30-0.60
0.30-0.60
0.30-0.60

0.030
0.030
0.030
0.030
0.030
0.030
0.030
0.030
0.030
0.030
0.030

0.030
0.030
0.030
0.030
0.030
0.030
0.030
0.030
0.030
0.030
0.030

0.50MAX
0.50-1.00
0.50MAX
0.50-1.00
0.50-1.00
0.50-1.00
0.50-1.00
0.50MAX
0.50-1.00
0.50-1.00
0.25-1.00

4.00-6.00
1.00-1.50
1.90-2.60
2.15-2.85
6.00-8.00 
4.00-6.00
1.00-1.50
1.90-2.60
2.15-2.85
6.00-8.00
8.00-10.0

0.45-0.65
0.44-0.65
0.87-1.13
0.44-0.65
0.45-0.65
0.45-0.65
0.44-0.65
0.87-1.13 
0.44-0.65
0.45-0.65 
0.90-1.10

415MIN
415MIN
415MIN
415MIN
415MIN
415MIN
415MIN
415MIN
415MIN
415MIN
415MIN

170MIN
170MIN
170MIN
170MIN
170MIN
170MIN170MIN
170MIN
170MIN
170MIN
170MIN

30/22
30/22
30/22
30/22
30/22 30/22
30/22
30/22
30/22
30/22
30/22 

Hardness 85 HRB MAX
Hardness 85 HRB MAX
Hardness 85 HRB MAX
Hardness 85 HRB MAX
Hardness 85 HRB MAX
Hardness 85 HRB MAX
Hardness 85 HRB MAX
Hardness 85 HRB MAX
Hardness 85 HRB MAX
Hardness 85 HRB MAX
Hardness 85 HRB MAX


We EXPORT, SUPPLY & STOCK the following Grades of Alloy Steel in form of pipes, tubes, sheets, bars, rods, wire & fabricated product like heat exchanger, pressure vessel, column & towers, etc.:

  •  P5
  •  P9
  •  P11
  •  P12
  •  P22
  •  P23
  •  P91
  •  T9
  •  T11
  •  T12
  •  T22
  •  T91
  •  Alloy 20
  •  15Mo3
  •  13CrMo44
  •  10CrMo910