### How to Calculate Stainless Carbon Alloy Products Theoretical Weight?

**Theoretical Metal Weight Calculation Formula**

**How to Calculate stainless steel weight by yourself**

**Stainless Steel Pipes**

Stainless Steel Round Pipes

Formula: (outer diameter – wall thickness) × wall thickness (mm) × length (m) × 0.02491

E.g.: 114mm (outer diameter) × 4mm (wall thickness) × 6m (length)

Calculation: (114-4) × 4 × 6 × 0.02491 = 83.70 (kg)

* For 316, 316L, 310S, 309S, etc., ratio=0.02507

Stainless Steel Rectangle Pipes

Formula: [(edge length + side width) × 2 /3.14- thickness] × thickness (mm) × length (m) × 0.02491

E.g.: 100mm (edge length) × 50mm (side width) × 5mm (thickness) × 6m (long)

Calculation: [(100+50)×2/3.14-5] ×5×6×0.02491=67.66 (kg)

Stainless Steel Square Pipes

Formula: (side width × 4/3.14- thickness) × thickness × length (m) × 0.02491

E.g.: 50mm (side width) × 5mm (thickness) × 6m (long)

Calculation: (50×4/3.14-5) ×5×6×0.02491 = 43.86kg

**Stainless Steel Sheets/Plates**

Formula: length (m) × width (m) × thickness (mm) × 7.93

E.g.: 6m (length) × 1.51m (width) × 9.75mm (thickness)

Calculation: 6 × 1.51 × 9.75 × 7.93 = 700.50kg

**Stainless Steel Bars**

Stainless Steel Round Bars

Formula: Dia(mm)×Dia(mm)×Length(m)×0.00623

E.g.: Φ20mm(Dia.)×6m (Length)

Calculation: 20 × 20 × 6 × 0.00623 = 14.952kg

*For 400 series stainless steel, ratio=0.00609

Stainless Steel Square Bars

Formula: side width (mm) × side width (mm) × length (m) × 0.00793

E.g.: 50mm (side width) × 6m (length)

Calculation: 50 × 50 × 6 × 0.00793 = 118.95 (kg)

Stainless Steel Flat Bars

Formula: side width (mm) × thickness (mm) × length (m) × 0.00793

E.g.: 50mm (side width) × 5.0mm (thickness) × 6m (length)

Calculation: 50 × 5 × 6 × 0.00793 = 11.895 (kg)

Stainless Steel Hexagon Bars

Formula: dia* (mm) × dia* (mm) × length (m) × 0.00686

E.g.: 50mm (diagonal) × 6m (length)

Calculation: 50 × 50 × 6 × 0.00686 = 103.5 (kg)

*dia. means diameter between two adjacent side width.

Stainless Steel Angle Bars

– Stainless Steel Equal-leg Angle Bars

Formula: (side width ×2 – thickness) ×thickness ×length(m) ×0.00793

E.g.: 50mm (side width) ×5mm (thickness) ×6m (length)

Calculation: (50×2-5) ×5×6×0.00793 = 22.60 (kg)

– Stainless Steel Unequal-leg Angle Bars

Formula: (side width + side width – thickness) ×thickness ×length(m) ×0.00793

E.g.: 100mm(side width) × 80mm (side width) × 8 (thickness) × 6m (long)

Calculation: (100+80-8) × 8 × 6 × 0.00793 = 65.47 (kg)

Density (g/cm3) | Stainless Steel Grade |

7.93 | 201, 202, 301, 302, 304, 304L, 305, 321 |

7.98 | 309S, 310S, 316Ti, 316, 316L, 347 |

7.75 | 405, 410, 420 |

**Stainless Steel Wire or Rod Theoretical calculation formula**

Stainless Steel Wire or Rod

Formula: Dia(mm)×Dia(mm)×Length(m)×0.00609 (Grade: 410 420 420j2 430 431)

Formula: Dia(mm)×Dia(mm)×Length(m)×0.00623 (Grade: 301 303 304 316 316L 321)

E.g.: 430 Φ0.1mm(Dia.)x10000m (Length)

Calculation: 0.1 × 0.1 × 10000 × 0.00609 = 14.952kg

*For 400 series stainless steel, ratio=0.609

**Stainless Steel Wire Rope Theoretical Calculation Formula**

Stainless Steel Wire Rope 1*7,1*19,7*7,7*19,7*37

Formula: Dia(mm)×Dia(mm)×Length(m)×4 Wire Rope Structure (7*7,7*19,7*37)

Formula: Dia(mm)×Dia(mm)×Length(m)×5 Wire Rope Structure(1*7,1*19)

E.g.: 304 7*19 Φ5mm(Dia.)x1000m (Length)

Calculation: 5 × 5 × 1 × 4 = 100kg

*For Weight per kilometre 7×7,7×19,7×37 Ratio:4

*For Weight per kilometre 1×7,1×19 Ratio:5

**Aluminum Sheets/Plates Theoretical weight calculation：**

Formula: length (m) × width (m) × thickness (mm) × 1.71

E.g.: 6m (length) × 1.5m (width) × 10.0mm (thickness)

Calculation: 6 × 1.5 × 10 × 1.71 = 153.9kg

**Aluminum Square/Rectangular Bar Theoretical weight calculation：**

Formula: length (m) × width (mm) × width (mm) × 0.0028

E.g.: 6m (length) × 10.0m (width) × 10.0mm (width)

Calculation: 6 × 10 × 10 × 0.0028 = 1.68 kg

**Aluminum Round Bar Theoretical weight calculation：**

Formula: length (m) × Diameter (mm) × Diameter (mm) × 0.0022

E.g.: 6m (length) × 10.0m (Diameter) × 10.0mm (Diameter)

Calculation: 6 × 10 × 10 × 0.0022 = 1.32 kg

**Aluminum Pipe/Tube Theoretical weight calculation：**

Formula: OD(mm) x (OD(mm) – T (mm)) × Length(m) × 0.00879

E.g.: 6m (length) × 10.0m (OD) × 1.0mm (Thickness)

Calculation: 6 × (10 – 1)× 10 × 0.00879 = 4.746 kg

**Aluminum Hexagon Bar Theoretical weight calculation：**

Formula: dia* (mm) × dia* (mm) × length (m) × 0.00242

E.g.: 50mm (diagonal) × 6m (length)

Calculation: 50 × 50 × 6 × 0.00242 = 36.3 (kg)

*dia. means diameter between two adjacent side width.

**Copper Round Bar Theoretical weight calculation：**

Formula: length (m) × Diameter (mm) × Diameter (mm) × 0.00698

E.g.: 6m (length) × 10.0m (Diameter) × 10.0mm (Diameter)

Calculation: 6 × 10 × 10 × 0.00698 = 4.188 kg

**Copper ****Square / Rectangular Bar ****Theoretical weight calculation：**

Formula: length (m) × Width (mm) × Width (mm) × 0.0089

E.g.: 6m (length) × 10.0m (Width) × 10.0mm (Width)

Calculation: 6 × 10 × 10 × 0.00698 = 5.34 kg

**Copper Hexagon Bar Theoretical weight calculation：**

Formula: dia* (mm) × dia* (mm) × length (m) × 0.0077

E.g.: 50mm (diagonal) × 6m (length)

Calculation: 50 × 50 × 6 × 0.0077 = 115.5 (kg)

*dia. means diameter between two adjacent side width.

**Copper Pipe/Tube Theoretical weight calculation：**

Formula: OD(mm) x (OD(mm) – T (mm)) × Length(m) × 0.028

E.g.: 6m (length) × 10.0m (OD) × 1.0mm (Thickness)

Calculation: 6 × (10 – 1)× 10 × 0.028 = 15.12 kg

**Copper Sheets/Plates Theoretical weight calculation：**

Formula: length (m) × width (m) × thickness (mm) × 0.0089

E.g.: 6m (length) × 1.5m (width) × 10.0mm (thickness)

Calculation: 6 × 1.5 × 10 × 8.9 = 801.0 kg

**Brass Round Bar Theoretical weight calculation：**

Formula: length (m) × Diameter (mm) × Diameter (mm) × 0.00668

E.g.: 6m (length) × 10.0m (Diameter) × 10.0mm (Diameter)

Calculation: 6 × 10 × 10 × 0.00668 = 4.0 kg

**Brass Sheets/Plates Theoretical weight calculation：**

Formula: length (m) × width (m) × thickness (mm) × 0.0085

E.g.: 6m (length) × 1.5m (width) × 10.0mm (thickness)

Calculation: 6 × 1.5 × 10 × 8.5 = 765.0 kg

**Brass Pipe/Tube Theoretical weight calculation：**

Formula: OD(mm) x (OD(mm) – T (mm)) × Length(m) × 0.0267

E.g.: 6m (length) × 10.0m (OD) × 1.0mm (Thickness)

Calculation: 6 × (10 – 1)× 10 × 0.0267 = 14.4 kg

**Brass Hexagon Bar Theoretical weight calculation：**

Formula: dia* (mm) × dia* (mm) × length (m) × 0.00736

E.g.: 50mm (diagonal) × 6m (length)

Calculation: 50 × 50 × 6 × 0.00736 = 110.4 (kg)

*dia. means diameter between two adjacent side width.

### How to Calculate Stainless Carbon Alloy Products Theoretical Weight?

The 2707HD Duplex steel is a special super duplex stainless steel. The corresponding UNS grade is S32707 stainless steel. The special super duplex stainless steel is used to solve the problem of the local corrosion resistance and strength of the heat-resistant chloride of super duplex stainless steel. It was introduced after 2000. The PRE value of S32707 stainless steel can be as high as 49. The high nitrogen, molybdenum, chromium content and Duplex structure make the yield strength and tensile strength of this steel pipe as high as 800MPa and 1000MPa, respectively, and the plasticity and toughness are also maintained in the engineering application. The higher level of need. The availability of the 2707HD Duplex steel has greatly broadened the application of duplex stainless steels and increased the competitiveness of high nickel materials such as super austenitic stainless steels and high nickel corrosion resistant alloys in engineering applications. The microstructure characteristics of the 2707HD Duplex steel are not significantly different from those of the superduplex stainless steel such as 2507 stainless steel.

Name | UNS No. | C | Cr | Ni | Mo | N | Other |

2003 | S32003 | 0.03 | 20 | 3.5 | 1.7 | 0.16 | |

2404 | S82441 | 0.03 | 24 | 3.5 | 1.5 | 0.22 | Cu |

2205 | S31803 | 0.03 | 21.8 | 5 | 2.8 | 0.12 | |

2205 | S32205 | 0.03 | 22.5 | 5 | 3.2 | 0.16 | |

Super 2507 | S32750 | 0.03 | 25 | 7 | 4.0 | 0.28 | Cu=0.5 |

Super 255 | S32550 | 0.03 | 25.5 | 5.5 | 3.4 | 0.20 | Cu=2.0 |

Super Z100 | S32760 | 0.03 | 25 | 7 | 3.5 | 0.25 | Cu=0.75 W=0.75 |

Hyper 2707 | S32707 | 0.03 | 27 | 6.5 | 4.8 | 0.40 |

Since the duplex stainless steel generally has twice the yield strength of general austenitic stainless steel, the use of duplex stainless steel can significantly reduce the thickness of the material and reduce the weight of the equipment. This saves material and reduces costs, making the 2707HD Duplex possible. Steel is higher than common duplex stainless steel and super duplex stainless steel, and it has the advantages of material saving and composition reduction.

S32707 stainless steel has good weldability. The 2707 Duplex steel is mostly used for the heat transfer tube of the heat exchanger. It is recommended to use the TIG/GTAW method (tungsten inert gas/tungsten inert gas arc welding) for the welding of the steel tube and the tube sheet. Manual welding and TIG welding can be used. Sandvik27.9.5L can be used as the filler material. Ferritic content is 30% to 70% in the α+γ duplex microstructure of weld metal and HAZ of Sandvik 27.9.5L. Because of the high nitrogen content in the stainless steel of S32707, γ2 austenite is quickly generated during the welding process. In order to make up for the consumption of nitrogen in the protective gas, the protection gas for the welding of this steel is Ar+2% to 3%N2. For heat exchangers, the TIG/GTAW method is recommended for tube and tube plate welding. During the welding process, the thermal cycle must be strictly controlled. The inter-layer temperature should be less than 100°C, and the heat input Q should be in the range of 0.2 to 1.5 KJ/mm.

S32707 stainless steel in the chloride environment has excellent resistance to pitting, crevice corrosion and stress corrosion resistance, and is particularly suitable for the manufacture of heat exchanger equipment using seawater and Cl-containing working media and cooling media. For example, the tower overhead heat exchanger bundle of the refinery atmospheric distillation unit has satisfactorily used S32707 stainless steel instead of 2507 duplex stainless steel and the seawater condenser cooling pipe (tube-pass seawater) manufactured with 2707HD.