Hitratna Metals

Technical Info

Stainless steel is essentially a low carbon steel which contains chromium at 10% or more by weight. It is this addition of chromium that gives the steel its unique stainless, corrosion resisting properties. The corrosion resistance and other useful properties of the steel are enhanced by increased chromium content and the addition of other elements such as molybdenum, nickel and nitrogen.

Benefits of Stainless Steel
  • Corrosion Resistance
  • Hygiene
  • Strength-To-Weight Advantage
  • Lower Total Life Cycle Cost
  • Fire And Heat Resistance
  • Aesthetic Appearance
  • Impact Resistance
  • 100%Recyclable



Grades – Chemical Composition and Equivalent Standards

AISI ASTM

EN DIN

C % Max

Mn % Max

Si % Max

S % Max

P % Max

Cr % Max

Ni % Max

Mo % Max

Others %

201

-

0.15

5.5-7.5

1.00

0.030

0.060

16.00-18.00

3.50-5.50

-

-

202 - 0.15 7.5-10 1.00 0.030 0.060 17.00-19.00 4.00-6.00 - -
302 1.4310 0.15 2.00 1.00 0.030 0.045 17.00-1900 8.00-10.00 - -
302HQ 1.4567 0.03 2.00 1.00 0.030 0.045 17.00-19.00 9.00-10.00 - Cu : 3.00-4.00
303 1.4305 0.15 2.00 1.00 0.15 Min 0.20 17.00-1900 8.00-10.00 - Cu : 1% max
303EHS - 0.15 2.00 1.00 0.30-0.33 0.20 17.00-19.00 8.00-10.00 - Cu : 1% max
304 1.4301 0.08 2.00 1.00 0.030 0.045 18.00-20.00 8.00-11.00 - -
304HC - 0.05 2.00 1.00 0.030 0.045 18.00-20.00 8.50-9.50 - Cu : 2.00-2.50
304L 1.4306 0.03 2.00 1.00 0.030 0.045 18.00-20.00 8.00-12.00 - -
308LER 1.4331 0.02 1.5-2.0 0.50 0.020 0.025 19.00-21.00 9.50-11.00 - -
309LER 1.4332 0.03 1.5-2.0 0.50 0.015 0.020 23.00-25.00 12.00-14.00 - -
310 1.4841 0.25 2.00 1.50 0.030 0.045 24.00-26.00 19.00-22.00 - -
310S 1.4842 0.08 2.00 1.50 0.030 0.045 24.00-26.00 19.00-22.00 - -
316 1.4401 0.08 2.00 1.00 0.030 0.045 16.00-18.00 10.00-14.00 2.00-3.00 -
316L 1.4404 0.03 2.00 1.00 0.030 0.045 16.00-18.00 10.00-14.00 2.00-3.00 -
316LER 1.4430 0.02 1.5-2.0 0.50 0.020 0.020 18.00-20..00 12.00-14.00 2.00-2.75 -
316Ti 1.4571 0.08 2.00 1.00 0.030 0.045 16.00-18.00 10.00-14.00 2.00-3.00 Ti : Min (5xC%)
317LN 1.4438 0.03 2.00 1.00 0.030 0.045 18.00-20.00 11.00-15.00 3.00-4.00 N : 0.10-0.22
321 1.4541 0.08 2.00 1.00 0.030 0.045 17.00-19.00 9.00-12.00 - Ti : Min (5xC%)
410 1.4006 0.15 1.00 1.00 0.030 0.040 11.50-13.50 - - -
416 1.4005 0.15 1.25 1.00 0.15 Min 0.060 12.00-14.00 - - -
416XM - 0.15 1.25 1.00 030-0.33 0.060 12.00-14.00 - - -
420 1.4021 0.15 Min 1.00 1.00 0.030 0.040 12.00-14.00 - - -
430 1.4016 0.12 1.00 1.00 0.030 0.040 16.00-18.00 - - -
430L - 0.03 1.00 1.00 0.030 0.040 16.00-18.00 - - -
430F 1.4104 0.12 1.25 1.00 0.15 Min 0.060 16.00-18.00 - - -
431 1.4057 0.20 1.00 1.00 0.030 0.040 15.00-17.00 1.25-2.50 - -

Theoritic Weight of Stainless Steel Round Bars

Size (mm)

Weight kgs/ meter Size (mm) Weight kgs/ meter
2 0.025 16 1.595
3 0.056 17 1.801
4 0.100 18 2.019
5 0.156 19 2.250
6 0.224 20 2.493
7 0.305 21 2.748
8 0.399 22 3.016
9 0.505 23 3.297
10 0.623 24 3.590
11 0.754 25 3.895
12 0.897 26 4.213
13 1.053 28 4.886
14 1.221 30 5.609
15 1.402 32 6.382
34 7.204 85 45.026
35 7.634 90 50.479
36 8.077 95 56.244
38 8.999 100 62.320
40 9.971 105 68.708
45 12.620 110 75.407
50 15.580 115 82.418
55 18.852 120 89.741
58 20.964 125 97.375
60 22.435 130 105.321
65 26.330 135 113.578
70 30.537 140 122.147
75 35.055 145 131.028
80 39.885 150 140.220

Conversion of Inch to millimeter and their corresponding weight

Inch

Inch (Dec)

Size (mm)

Weight kgs/ meter

1/8"

0.125

3.175

0.063

3/16"

0.188

4.763

0.141

1/4"

0.250

6.350

0.251

5/16"

0.313

7.938

0.393

3/8"

0.375

9.525

0.565

7/16"

0.438

11.113

0.770

1/2"

0.500

12.700

1.005

5/8"

0.625

15.875

1.571

3/4"

0.750

19.050

2.262

7/8"

0.875

22.225

3.078

1"

1.000

25.400

4.021

1-1/8"

1.125

28.575

5.089

1-3/16"    1.188

30.163

5.670

3-3/16"    3.188

1-1/4"

1.250

31.750

6.282

1-5/16"    1.313

33.338

6.926

3-5/16"    3.313

1-3/8"

1.375

34.925

7.602

1-7/16"    1.438

36.513

8.308

3-7/16"    3.438

1-1/2"

1.500

38.100

9.046

1-5/8"

1.625

41.275

10.6171

1-3/4"

1.750

44.450

12.313

1-7/8"

1.875

47.625

14.135

2"

2.000

50.800

16.083

2-1/8"

2.125

53.975

18.156

2-3/16"    2.188

55.563

19.239

4-3/16"    4.188

2-1/4"

2.250

57.150

20.354

2-5/16"    2.313

58.738

21.501

4-5/16"    4.313

2-3/8"

2.375

60.325

22.679

2-7/16"    2.438

61.913

23.888

4-7/16"    4.438

2-1/2"

2.500

63.500

25.129

2-5/8"

2.625

66.675

27.705

2-3/4"

2.750

69.850

30.406

2-7/8"

2.875

73.025

33.233

3"

3.000

76.200

36.186

3-1/8"

3.125

79.375

39.264

80.963

40.850

5-3/16"    5.188

131.763 

3-1/4"

3.250

82.550

42.468

84.138

44.117

5-5/16"    5.313

134.938 

3-3/8"

3.375

85.725

45.798

87.313

47.509

5-7/16"    5.438

138.113 

3-1/2"

3.500

88.900

49.253

3-5/8"

3.625

92.075

52.834

3-3/4"

3.750

95.250

56.540

3-7/8"

3.875

98.425

60.372

4"

4.000

101.600  

64.330

4-1/8"

4.125

104.775

 

68.414

106.363

70.503

-

-

4-1/4"

4.250

107.950 

 

72.623

109.538 

 

74.774

-

-

4-3/8"

4.375

111.125 

 

76.958

112.713 

 

79.172

-

-

4-1/2"

4.500

114.300 

 

81.418

4-5/8"

4.625

117.475 

 

86.004

4-3/4"

4.750

120.650 

 

90.716

4-7/8"

4.875

123.825 

 

95.553

5"

5.000

127.000 

 

100.516

5-1/8"

5.125

130.175 

 

105.605

 

108.196

-

-

-

5-1/4"

5.250

133.350 

 

110.819

 

113.473

-

-

-

5-3/8"

5.375

136.525 

 

116.159

 

118.876

-

-

-

5-1/2"

5.500

139.700 

 

121.624

5-5/8"

5.625

142.875 

 

127.215

5-3/4"

5.750

146.050 

 

132.932

5-7/8"

5.875

149.225 

 

138.775

6"

6.000

152.400 

 

144.743


Theoritic Weight of Stainless Steel Hex & Square Bars

Size (mm)

Weight (Hex) kg/ meter Weight (Square) kg/ meter

5

0.172

 0.197

6

0.248

 0.283

8

0.441

 0.504

10

0.689

 0.787

12

0.992

1.134

14

1.350

1.543

15

1.550

1.771

16

1.763

 2.015

17

1.991

2.275

18

2.232

2.551

19

2.487

2.842

20

 2.755

3.149

21

3.038

3.472

22

3.334

3.810

24

 3.967

4.534

25

 4.305

4.920

27

 5.021

5.739

28

 5.400

6.172

30

 6.199

 7.085

32

 7.053

 8.061

34

7.963

 9.100

35

8.438

9.643

36

8.927

 10.202

38

9.946

11.367

40

11.021

12.595

42

12.150

13.886

45

13.948

 15.941

50

17.220

19.680


Tolerance Chart for SS Round Bars as per ISO

Size Range (mm)

h8 h9 h10 h11 h12 h13 K12/K13
Upto 6 -0.018 -0.030 -0.048 -0.075 -0.120 -0.180 -
Over 6 upto 10 -0.022 -0.036 -0.058 -0.090 -0.150 -0.220 -
Over 10 upto 18 -0.027 -0.043 -0.070 -0.110 -0.180 -0.270 -
Over 18 upto 30 -0.033 -0.052 -0.084 -0.130 -0.210 -0.330 +0.10/+0.15
Over 30 upto 50 -0.039 -0.062 -0.100 -0.160 -0.250 -0.390 +0.15/+0.20
Over 50 upto 80 -0.046 -0.074 -0.120 -0.190 -0.300 -0.460 +0.20/+0.25
Over 80 upto 120 -0.054 -0.087 -0.140 -0.220 -0.350 -0.540 +0.25/+0.30

Tolerance Chart For SS Round Bars as per ASTM A 484

Cold Finished Round Bars

Size Range in Inch

Tolerance
1/16” to less than 5/16” +/- 0.001”
5/16” to less than 1/2” +/- 0.0015”
1/2” to less than 1” +/- 0.002”
1” to less than 1-1/2” +/- 0.0025”
1-1/2” to less than 4” +/- 0.003”

Cold Finished Hexagon & Square Bars

Size Range in Inch

Tolerance

1/16” to less than 5/16”

+/- 0.002”

5/16” to less than 1/2”

+/- 0.003”

1/2” to less than 1”

+/- 0.004”

1” to less than 2”

+/- 0.006”

2” to less than 3”

+/- 0.008”

3" and over

+/- 0.010”


Hardness Conversions Chart

Brinnel Hardness HB

Vickers Hardness HV

Rockwell Hardness HRC

Rockwell Hardness HRB

Tensile Strength ksi

321

339

34

108

158

311

328

33

108

154

302

319

32

107

150

293

309

31

106

146

285

301

30

105

142

277

292

29

104

138

269

284

28

104

135

262

276

27

103

131

255

269

25

102

125

248

261

24

101

121

241

253

23

100

119

235

247

22

99

117

229

241

21

98

113

223

234

-

97

110

217

228

-

96

107

212

222

-

95

102

207

218

-

95

100

202

212

-

94

98

197

207

-

93

96

192

202

-

92

94

187

196

-

91

90

183

192

-

90

89

179

188

-

89

87

174

182

-

88

84

170

178

-

87

82

166

175

-

86

80

163

171

-

85

78

159

167

-

84

77

156

163

-

83

76

153

160

-

82

75

149

156

-

81

74

146

153

-

80

72

143

150

-

79

71

140

147

-

78

70

137

143

-

76

67

134

140

-

75

66

131

137

-

74

65

128

134

-

73

64

126

132

-

72

63

124

129

-

71

62

121

127

-

70

60

118

124

-

69

59

116

122

-

68

58

114

119

-

67

57

111

117

-

66

56