Steel Technical Specifications

Structural Steel Specifications | Pressure Vessel Steel Specifications | Machining Alloys | Hardness Symbols

Hollow Bar Size & Weight | Conversion Table | Formula for Mass Calculation

Structural Steel Specifications
    Minimum Yield  Tensile Stregth
Specification Thickness (mm) Strength (Mpa) (Mpa)
       
  BS 4360 Gr 43A 6.0 - 100 265 430 - 580
  BS 4360 Gr 43B 6.0 - 100 265 430 - 580
  BS 4360 Gr 43C 6.0 - 100 265 430 - 580
  BS 4360 Gr 43D 6.0 - 100 265 430 - 580
  BS 4360 Gr 43EE 6.0 - 63 265 430 - 580
       
  BS 4360 Gr 50B 4.5 -100 345 490 - 640
  BS 4360 Gr 50C 4.5 -100 345 490 - 640
  BS 4360 Gr 50D 4.5 -100 345 490 - 640
  BS 4360 Gr 50DD 6.0 -80 345 490 - 640
  BS 4360 Gr 50EE 6.0 - 63 345 490 - 640
       
  SANS 1431 Gr 240WA 4.5 - 100 240 380 - 510
  SANS 1431 Gr 240WC 6.0 - 100 240 380 - 510
  SANS 1431 Gr 240WDD 6.0 - 80 240 380 - 510
  SANS 1431 Gr 300WA 4.5 - 100 300 450 - 620
  SANS 1431 Gr 300WC 4.5 - 100 300 450 - 620
  SANS 1431 Gr 300WDD 4.5 - 80 300 450 - 620
  SANS 1431 Gr 350WA 4.5 - 100 350 480 - 650
  SANS 1431 Gr 350WC 4.5 - 80 350 480 - 650
  SANS 1431 Gr 350WDD 6.0 - 80 350 480 - 650
  ASTM A36 4.5 - 100 250 400 - 550
  ROQ-tuf® AM700 (Structural) 6.0 - 80 700 780 - 900
       
Pressure Vessel Steel Specifications
    Minimum Yield  Tensile Stregth
Specification Thickness (mm) Strength (Mpa) (Mpa)
       
  ASTM A285 Gr C 6.5 - 50 205 380 - 515
       
  ASTM A516 Gr 60 6.0 - 63 220 415 - 550
  ASTM A516 Gr 65 4.5 - 63 240 450 - 585
  ASTM A516 Gr 70 6.0 - 63 260 485 - 620
       
  ASTM A537 Cl 1 6.0 - 63 345 485 - 620
       
  BS1501/151 Gr 430 A 4.5 - 80 240 430 - 550
  BS1501/161 Gr 430 A 4.5 - 80 240 430 - 550
  BS1501/224 Gr 430 A 6.0 - 63 285 430 - 550
  BS1501/151 Gr 430 B 4.5 - 80 240 430 - 550
  BS1501/161 Gr 430 A 4.5 - 80 240 430 - 550
       
  BS1501/223 Gr 490 A 6.0 - 63 345 490 - 610
  BS1501/224 Gr 490 A 6.0 - 63 315 490 - 610
  BS1501/225 Gr 490 A 6.0 - 63 345 490 - 610
  BS1501/223 Gr 490 B 6.0 - 63 345 490 - 610
  BS1501/224 Gr 490 B 6.0 - 63 315 490 - 610
  BS1501/225 Gr 490 B 6.0 - 63 345 490 - 610
       
  ROQ-tuf® AM700 6.0 - 63 700 780 - 900
       
 

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Machine Alloys
220M07 ( En 1a)
               
  BS 970 SAE (AISI) WERKSTOFF NO  
  220M 07 1112 1.0711  
   
  CHEMICAL COMPOSITION  
   
  Carbon Silicon Manganese Sulpher Phosphorus  
  0.07 - 0.15 0.10 Max 0.80 - 1.20 0.20 - 0.30 0.07 Max  
   
  MECHANICAL PROPERTIES  
   
  PROPERTY     SIZE: (Diameter or Width across flats) mm                       
      13.5mm or less 13.5mm - 38mm 38mm - 63.5mm 63.5mm - 100mm  
     Tensile Strength, Mpa 490 430 385 355  
     Elongation percent, Min 10 14 14 14  
               
070M20 (En3B) BRIGHT
               
  BS 970 SAE (AISI) WERKSTOFF NO  
  070 M 20 1020 1.0402  
   
  CHEMICAL COMPOSITION  
   
  Carbon Silicon Manganese Sulpher Phosphorus  
  0.25 Max 0.35 Max 1.00 Max 0.06 Max 0.06 Max  
   
  MECHANICAL PROPERTIES  
   
    PROPERTY     NORMALIZED    
     Tensile Strength, Mpa, Min     430    
     Elongation percent, Min     17    
               
080M40 (En8) BRIGHT
               
  BS 970 SAE (AISI) WERKSTOFF NO  
  080 M 40 1043 1.0503  
   
  CHEMICAL COMPOSITION  
   
  Carbon Silicon Manganese Sulpher Phosphorus  
  0.36 - 0.44 0.05 - 0.35 0.60 - 1.00 0.06 Max 0.06 Max  
   
  MECHANICAL PROPERTIES  
   
    PROPERTY     NORMALIZED    
    Limited Ruling Section Min     150    
    Tensile Strength, Mpa, Min     540    
    Yield Stress, Mpa, Min     277    
    Elongation percent, Min     17    
    Izod Impact Value, Joule, Min     -    
    Brinell Hardness Number     152/207    
               
0702M20 (En3A) BLACK
               
  BS 970 SAE (AISI) WERKSTOFF NO  
  070 M 20 1020 1.0402  
   
  CHEMICAL COMPOSITION  
   
  Carbon Silicon Manganese Sulpher Phosphorus  
  0.15 - 0.25 0.05 - 0.35 0.40 - 0.90 0.06 Max 0.06 Max  
   
  MECHANICAL PROPERTIES  
   
    PROPERTY     NORMALIZED    
    Limited Ruling Section mm     152    
    Tensile Strength, Mpa, Min     432    
    Elongation percent, Min     21    
               
080M40 (En8) BLACK
               
  BS 970 SAE (AISI) WERKSTOFF NO  
  080 M 40 1043 1.0503  
   
  CHEMICAL COMPOSITION  
   
  Carbon Silicon Manganese Sulpher Phosphorus  
  0.36 - 0.44 0.05 - 0.35 0.60 - 1.00 0.06 Max 0.06 Max  
   
  MECHANICAL PROPERTIES  
   
    PROPERTY     CONDITION    
                 Hardened & Tempered  
        Normalized Q R  
    Limited Ruling Section mm   254 65 22  
    Tensile Strength, Mpa   510/540 620/770 690/850  
    Yield Stress, Mpa, Min   245 385 465  
    Elongation percent, Min   17 22 20  
    Izod Impact Value, Joule, Min   20 33.4 33.4  
    Brinell Hardness Number   152/207 179/229 210/255  
               
070M55 (En9)
               
  BS 970 SAE (AISI) WERKSTOFF NO  
  070 M 55 1055 1.1209  
   
  CHEMICAL COMPOSITION  
   
  Carbon Silicon Manganese Sulpher Phosphorus  
  0.50 - 0.60 0.05 - 0.35 0.50 - 0.80 0.06 Max 0.06 Max  
   
  MECHANICAL PROPERTIES  
   
    PROPERTY     NORMALIZED    
    Limited Ruling Section mm     254    
    Tensile Strength, Mpa     600/700    
    Yield Stress, Mpa, Min     310    
    Elongation percent, Min     13    
    Brinell Hardness Number     201/255    
               
709M40 (En19)
               
  BS 970 SAE (AISI) WERKSTOFF NO  
  709 M 40 4140 1.7225  
   
  CHEMICAL COMPOSITION  
   
  Carbon Silicon Manganese Chromium Molybdenum Sulpher  
  0.35 - 0.45 0.10 - 0.35 0.50 - 0.80 0.90 - 1.20 0.20 - 0.40 0.05 Max  
  Phosphorus  
  0.05 Max  
   
  MECHANICAL PROPERTIES  
   
    PROPERTY     HARDENED & TEMPERED CONDITION    
      R S T U  
    Limited Ruling Section mm 254 152 102 64  
    Tensile Strength, Mpa 690/850 770/930 850/1000 930/1080  
    Yield Stress, Mpa, Min 480 570 665 740  
    Elongation percent, Min 15 15 13 12  
    Izod Impact Value, Joule, Min 34 54 54 47.5  
    Brinell Hardness Number 201/255 223/277 248/302 269/321  
      V  
    Limited Ruling Section mm 29  
    Tensile Strength, Mpa 1000/1160  
    Yield Stress, Mpa, Min 835  
    Elongation percent, Min 12  
    Izod Impact Value, Joule, Min 47.5  
    Brinell Hardness Number 293/341  
               
817M40 (En24)
               
  BS 970 SAE (AISI) WERKSTOFF NO  
  817 M 40 9850 1.6565  
   
  CHEMICAL COMPOSITION  
   
  Carbon Silicon Manganese Nickel Chromium Molybdenum  
  0.35 - 0.45 0.10 - 0.35 0.45 - 0.70 1.30 - 1.80 0.90 - 1.40 0.20 - 0.35  
  Sulpher  Phosphorus  
  0.05 Max   0.05 Max  
   
  MECHANICAL PROPERTIES  
   
    PROPERTY     HARDENED & TEMPERED CONDITION    
      T U V W  
    Limited Ruling Section mm 254 102 64 29  
    Tensile Strength, Mpa 850/1000 930/1080 1000/1160 1080/1240  
    Yield Stress, Mpa, Min 635 740 835 925  
    Elongation percent, Min 13 12 12 11  
    Izod Impact Value, Joule, Min 40.7 47.5 47.5 40.7  
    Brinell Hardness Number 248/302 269/321 293/341 311/375  
  X Y  
    Limited Ruling Section mm 29 29  
    Tensile Strength, Mpa 1160/1310 1540  
    Yield Stress, Mpa, Min 1005 1130  
    Elongation percent, Min 10 5  
    Izod Impact Value, Joule, Min 34 11  
    Brinell Hardness Number 341/388 444 min  
               
835M30 (En 30B)
               
  BS 970 SAE (AISI) WERKSTOFF NO  
  835 M 30 - 1.6747  
   
  CHEMICAL COMPOSITION  
   
  Carbon Silicon Manganese Nickel Chromium Molybdenum  
  0.26 - 0.34 0.10 - 0.35 0.40 - 0.60 3.90 - 4.30 1.10 - 1.40 0.20 - 0.40  
  Sulpher  Phosphorus  
  0.05 Max   0.05 Max  
   
  MECHANICAL PROPERTIES  
   
               PROPERTY     CONDITION Z    
    Limited Ruling Section mm     152    
    Tensile Strength, Mpa     1540    
    Yield Stress, Mpa, Min     1125    
    Elongation percent, Min     7    
    Izod Impact Value, Joule, Min     20    
    Brinell Hardness Number     444 min    
               
               
655M13 (En 36B)
               
  BS 970 SAE (AISI) WERKSTOFF NO  
  655 M 13 3316 1.5752  
   
  CHEMICAL COMPOSITION  
   
  Carbon Silicon Manganese Nickel Chromium Sulpher  
  0.12 - 0.18 0.10 - 0.35 0.30 - 0.60 3.00 - 3.75 0.60 - 1.10 0.05 Max  
  Phosphorus  
  0.05 Max  
   
  MECHANICAL PROPERTIES  
   
               PROPERTY          
    Tensile Strength, Mpa     1000    
    Elongation percent, Min     9    
    Izod Impact Value, Joule, Min     30    
               

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Hardness Symbols

    Mpa  HARDNESS
SYMBOL TON f/SQ IN. Newtons/sq (Brinell)
P 35/45 540/695 152/207
Q 40/50 618/772 179/229
R 45/55 695/849 201/255
S  50/60 772/926 223/277
T 55/65 846/1004 24/302
U 60/70 926/1080 269/331
V 65/75 1004/1158 293/352
W 70/80 1080/1235 311/375
X 75/85 1158/1312 341/401
Y 80/90 1235/1390 363/429
Z 100 MIN. 1544 MIN. 444 MIN.
 

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Hollow Bar Size & Weight

    Wall +/-      Wall +/-      Wall +/- 
OD ID thickness Weight OD ID thickness Weight OD ID thickness Weight
    mm Kg/M     mm Kg/M     mm Kg/M
32 16 8 4.74 125 90 17.5 46.4 273 223 25 154
32 20 6 3.85 125 100 12.5 34.7 273 228 22.5 140
36 16 10 6.41 132 71 30.5 76.3 292 228 32 206
36 20 8 5.52 132 90 21 57.5 292 242 25 165
36 25 5.5 4.14 132 106 13 38.2 292 252 20 135
40 20 10 7.40 140 80 30 81.4 298 198 50 307
40 25 7.5 6.01 140 100 20 59.2 298 208 45 282
40 28 6 5.03 140 112 14 43.5 298 218 40 255
45 20 12.5 10.1 150 80 35 99.3 298 226 36 234
45 28 8.5 7.65 150 106 22 69.4 298 234 32 210
45 32 6.5 6.17 150 125 12.5 42.4 298 238 30 199
50 25 12.5 11.6 160 90 35 107.9 318 228 50 331
50 32 9 9.10 160 112 24 80.5 318 228 45 303
50 36 7 7.42 160 132 14 50.4 318 238 40 275
56 28 14 14.5 1720 100 35 115.8 318 254 32 226
56 36 10 11.3 170 118 26 92.3 318 268 25 182
56 40 8 9.47 170 140 15 57.3 318 275 20 147
63 32 15.5 18.2 180 100 40 138.2 318 293 12.5 94
63 40 11.5 14.6 180 125 27.5 103.4 324 224 50 338
63 50 6.5 9.06 180 150 15 61.0 324 234 45 310
71 36 17.5 23.1 190 106 42 153.6 324 244 40 280
71 45 13 18.6 190 132 29 115.1 324 260 32 231
71 56 7.5 11.7 190 160 15 64.7 324 274 25 185
75 40 17.5 28.4 200 112 44 169.5 324 284 20 150
75 50 12.5 19.3 200 140 30 125.8 355 255 50 376
75 60 7.5 12.5 200 160 20 88.8 355 265 45 343
80 40 20 29.6 212 125 43.5 181.0 355 275 40 310
80 50 15 24.0 212 150 31 138.0 355 291 32 254
80 63 8.5 15.0 212 170 21 98.9 355 305 25 203
85 45 20 32.1 224 132 46 202.0 355 315 20 165
85 55 15 25.9 224 160 32 151.5 355 330 12.5 105
85 67 9 16.9 224 180 22 109.6 406 306 50 439
90 50 20 34.5 236 140 48 223.0 406 316 45 401
90 63 13.5 25.5 236 170 33 165.1 406 326 40 361
90 71 9.5 18.9 236 190 23 120.8 406 342 32 295
95 50 22.5 40.2 250 150 50 247.0 406 356 25 234
95 67 14 28.0 250 180 35 185.5 406 362 22.5 207
95 75 10 21.0 250 200 25 138.7 406 366 20 189
100 56 22 42.3 254 154 50 252 419 319 50 455
100 71 14.5 30.6 254 184 35 189 419 329 45 415
100 80 10 22.2 254 204 25 142 419 339 40 374
106 56 25 49.9 267 167 50 268 419 355 32 305
106 71 17.5 38.2 267 187 40 224 419 369 25 245
106 80 13 29.8 267 217 25 150 419 379 20 197
112 63 24.5 52.9 267 228 19.5 120  
112 80 16 37.9 273 167 53 288  
112 90 11 27.4 273 173 50 276  
118 63 27.5 61.4 273 183 45 253  
118 80 19 46.4 273 193 40 231  
118 90 14 35.9 273 201 36 211  
125 71 27 65.3 273 217 28 170        
 

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Conversion Table

To Convert Into Multiplier Reciprocal
Inches Millimetres 25.4 0.0394
Inches Centimetres 2.540 0.3937
Feet Metres 0.3048 3.2809
Yards Metres 0.9144 1.0936
Miles Kilometres 1.6093 0.6214
Sq. Inches Sq. Centimetres 6.4514 0.155
Sq. Feet Sq. Metres 0.0929 10.7643
Cubic Inches Cubic Centimetres 16.3862 0.0610
Cubic Feet Cubic Metres 0.0283 35.3166
Gallons Litres 4.5459 0.220
Lbs (av) Kilograms 0.4536 2.2046
Feet / Lbs Kilo / Metres 0.1382 7.2331
Lbs per Sq. Inch Kilo per Sq. Centimetre 0.0703 14.223
Lbs per Sq. Foot Kilo per Sq. Metre 4.8826 0.2048
Lbs per Yard Kilo per Metre 0.4961 2.0159
Megapascals (Mpa) Tons/Sq. Inch Tons/Sq. Inch Megapascals (Mpa) 15.4300 15.430
 

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Formula for Mass Calculations

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