The most challenging aspect of budgeting for mechanical machining is accurately calculating the cost of stainless steel materials. It is often difficult to arrive at an exact value, mainly due to the variable density of stainless steel. This variability occurs because stainless steel is an alloy with different components and concentrations, which does not result in definitive density.
However, if the proportions of its different components are known, an accurate calculation can be achieved.
The densities of chromium stainless steel, chromium-nickel stainless steel and chromium-manganese-nitrogen stainless steel differ due to their varying compositions. Even within the same material, the density can vary according to the different components.
According to national standards and daily accumulations, the approximate densities (g/cm³) of various stainless steels are:
| Stainless steel | Density |
| 201 | 7.93 |
| 202 | 7.93 |
| 301 | 7.93 |
| 302 | 7.93 |
| 304 | 7.93 |
| 304L | 7.93 |
| 305 | 7.93 |
| 321 | 7.93 |
| 309S | 7.98 |
| 310S | 7.98 |
| 316 | 7.98 |
| 316L | 7.98 |
| 347 | 7.98 |
| 405 | 7.75 |
| 410 | 7.75 |
| 420 | 7.75 |
| 409 | 7.7 |
| 430 | 7.7 |
| 434 | 7.7 |
Stainless Steel Density Chart
| Note | Density (Kg/dm³) |
| 00Cr30Mo2 | 7.64 |
| 00Cr27Mo | 7.67 |
| 1Ch17Mo | 7.7 |
| 1Ch15 | 7.7 |
| 3Ch16 | 7.7 |
| 00Cr27Mo | 7.67 |
| 1Ch17 | 7.7 |
| 00Cr17 | 7.7 |
| 7Ch17 | 7.7 |
| 1Ch12 | 7.76 |
| 1Ch13 | 7.76 |
| 0Cr13Ai | 7.75 |
| 00Cr12 | 7.76 |
| 0Cr13Ai | 7.75 |
| 2Ch13 | 7.75 |
| 3Ch13 | 7.75 |
| 0Cr18Ni13Si4 | 7.75 |
| 00Cr18Mo2 | 7.75 |
| 0Cr26Ni5Mo2 | 7.8 |
| 1Cr17Mn6Ni5N | 7.93 |
| 00Cr18Ni9S13 | 7.93 |
| 1Cr17Mn6Ni6N | 7.93 |
| 1Cr18nNi8Ni5N | 7.93 |
| 00Cr19Ni13Mo3 | 7.98 |
| 0Cr19Ni12Mo3 | 7.98 |
| 0Cr25Ni20 | 7.98 |
| 0Cr18Ni12Mo2Cu2 | 7.98 |
| 00Cr18Ni14Mo2Cu2 | 7.98 |
| 0Cr19Ni12Mo3 | 7.98 |
| 00Cr19Ni13Mo3 | 7.98 |
| 0Cr18Ni11Nb | 7.98 |
| 0Cr17Ni12Mo2N | 7.98 |
| 00Cr17Ni14Mo2 | 7.98 |
| 0Cr17Ni12Mo2N | 7.98 |
| 00Cr17Ni13Mo2N | 7.98 |
| 0Cr18Ni16Mo5 | 8 |
| 1Cr17Ni7 | 7.93 |
| 0Cr23Ni13 | 7.93 |
| 1Cr17Ni8 | 7.93 |
| 1Cr18Ni9 | 7.93 |
| 1Cr18Ni9Si3 | 7.93 |
| 0Cr19Ni9 | 7.93 |
| 00Cr19Ni11 | 7.93 |
| 0Cr19Ni9N | 7.93 |
| 0Cr18Ni11Ti | 7.93 |
| 0Cr17Ni17Al | 7.93 |
Stainless Steel Grade Comparison Table
| China | Japan | U.S | UK | Germany | France | Former Soviet Union |
| GB1220-92(84) | JIS | AISI | BS 970 Part 4 | DIN 17440 | NFA35-572 | TOCT5632 |
| GB3220-92(84) | UN | BS 1449 Part 2 | DIN 17224 | NFA35-576~582 | ||
| NFA35-584 | ||||||
| 1Cr17Mn6Ni5N | SUS201 | 201 | – | – | – | – |
| 1Cr18Mn8Ni5N | SUS202 | 202 | – | – | – | 12×17.T9AH4 |
| – | – | S20200 | 284S16 | – | – | – |
| 2Cr13Mn9Ni4 | – | – | – | – | – | – |
| 1Cr17Ni7 | SUS301 | 301 | – | – | – | – |
| – | – | S30100 | 301S21 | X12CrNi177 | Z12CN17.07 | – |
| 1Cr17Ni8 | SUS301J1 | – | – | X12CrNi177 | – | – |
| 1Cr18Ni9 | SUS302 | 302 | 302S25 | X12CrNi188 | Z10CN18.09 | 12×18H9 |
| 1Cr18Ni9Si3 | SUS302B | 302B | – | – | – | – |
| Y1Cr18Ni9 | SUS303 | 303 | 303S21 | X12CrNiS188 | Z10CNF18.09 | – |
| Y1Cr18Ni9Se | SUS303Se | 303Se | 303S41 | – | – | – |
| 0Cr18Ni9 | SUS304 | 304 | 304S15 | X2CrNi89 | Z6CN18.09 | 08×18B10 |
| 00Cr19Ni10 | SUS304L | 304L | 304S12 | X2CrNi189 | Z2CN18.09 | 03×18H11 |
| 0Cr19Ni9N | SUS304N1 | 304N | – | – | Z5CN18.09A2 | – |
| 00Cr19Ni10NbN | SUS304N | XM21 | – | – | – | – |
| 00Cr18Ni10N | SUS304LN | – | – | X2CrNiN1810 | Z2CN18.10N | |
| 1Cr18Ni12 | SUS305 | S30500 | 305S19 | X5CrNi1911 | Z8CN18.12 | 12×18H12T |
| (0Cr20Ni10) | SUS308 | 308 | – | – | – | – |
| 0Cr23Ni13 | SUS309S | 309S | – | – | – | – |
| 0Cr25Ni20 | SUS310S | 310S | – | – | – | – |
| 0Cr17Ni12Mo2N | SUS315N | 316N,S31651 | – | – | – | – |
| 0Cr17Ni12Mo2 | SUS316 | 316 | 316S16 | X5CrNiMo1812 | Z6CND17.12 | 08×17H12M2T |
| 00Cr17Ni14Mo2 | SUS316L | 316L | 316S12 | X2CrNiMo1812 | Z2CND17.12 | 03×17H12M2 |
| 0Cr17Ni12Mo2N | SUS316N | 316N | – | – | – | – |
| 00Cr17Ni13Mo2N | SUS316LN | – | – | X2CrNiMoN1812 | Z2CND17.12N | – |
| 0Cr18Ni12Mo2Ti | – | – | 320S17 | X10CrNiMo1810 | Z6CND17.12 | – |
| 0Cr18Ni14Mo2Cu2 | SUS316J1 | – | – | – | – | – |
| 00Cr18Ni14Mo2Cu2 | SUS316J1L | – | – | – | – | – |
| 0Cr18Ni12Mo3Ti | – | – | – | – | – | – |
| 1Cr18Ni12Mo3Ti | – | – | – | – | – | – |
| 0Cr19Ni13Mo3 | SUS317 | 317 | 317S16 | – | – | 08X17H15M3T |
| 00Cr19Ni13Mo3 | SUS317L | 317L | 317S12 | X2CrNiMo1816 | – | 03X16H15M3 |
| 0Cr18Ni16Mo5 | SUS317J1 | – | – | – | – | – |
| 0Cr18Ni11Ti | SUS321 | 321 | – | X10CrNiTi189 | Z6CNT18.10 | 08X18H10T |
| 1Cr18Ni9Ti | – | – | – | – | – | 12X18H20T |
| 0Cr18Ni11Nb | SUS347 | 347 | 347S17 | X10CrNiNb189 | Z6CNNb18.10 | 08X18H12B |
| 0Cr18Ni13Si4 | SUSXM15J1 | XM15 | – | – | – | – |
| 0Cr18Ni9Cu3 | SUSXM7 | XM7 | – | – | Z6CNU18.10 | – |
| 1Cr18Mn10NiMo3N | – | – | – | – | – | – |
| 1Cr18Ni12Mo2Ti | – | – | 320S17 | X10CrNiMoTi1810 | Z8CND17.12 | – |
| 00Cr18Ni5Mo3Si2 | – | S31500 | – | 3RE60(瑞典) | – | – |
| 0Cr26Ni5Mo2 | SUS329J1 | – | – | – | – | – |
| 1Cr18Ni11Si4AlTi | – | – | – | – | – | – |
| 1Cr21Ni5Ti | – | – | – | – | – | – |
| 0Cr13 | SUS410S | S41000 | – | X7Cr13 | Z6C13 | 08X13 |
| 1Ch13 | SUS410 | 410 | 410S21 | X10Cr13 | Z12Cr13 | 12X13 |
| 2Ch13 | SUS420J1 | 420 | 420S29 | X20Cr13 | Z20Cr13 | 30X13 |
| – | – | S4200 | 420S27 | – | – | – |
| 3Ch13 | SUS420J2 | – | 420S45 | – | – | 14X17H2 |
| 3Cr13Mo | – | – | – | – | – | – |
| 3Ch16 | SUS429J1 | – | – | – | – | – |
| 1Cr17Ni2 | SUS431 | 431 | 431S29 | X22CrNi17 | Z15CN-02 | – |
| 7Ch17 | SUS440A | 440A | – | – | – | – |
| 11Ch17 | SUS440C | 440°C | – | – | – | 95X18 |
| 8Ch17 | SUS440B | 44013 | – | – | – | – |
| 1Ch12 | – | – | – | – | – | – |
| 4Ch13 | SUS420J2 | – | – | X4DCr13 | Z40C13 | – |
| 9Cr18 | SUS440C | 440°C | – | X105CrMo17 | Z100CD17 | – |
| 9Cr18Mo | SUS440C | 440°C | – | – | – | – |
| 9Cr18MoV | SUS440B | 440B | – | X90CrMoV18 | Z6CN17.12 | – |
| 0Cr17Ni4Cu4Nb | SUS630 | 630 | – | – | – | – |
| 0Cr17Ni7Al | SUS631 | 631 | – | – | – | 09X17H710 |
| – | – | S17700 | – | X7CrNiAl177 | Z8CNA17.7 | – |
| 0Cr15Ni7Mo2Al | – | 632 | – | – | – | – |
| – | – | S15700 | – | – | Z8CND15.7 | – |
| 00Cr12 | SUS410 | – | – | – | – | – |
| 0Cr13Al(00Cr13Al) | SUS405 | 405 | – | – | – | – |
| – | – | S40500 | 405S17 | X7CrAl13 | Z6CA13 | – |
| 1Ch15 | SUS429 | 429 | – | – | – | – |
| 1Ch17 | SUS430 | 430 | – | – | – | 12X17 |
| – | – | S43000 | 430S15 | X8Cr17 | Z8C17 | – |
| (Y1Cr17) | SUS430F | 430ºF | – | – | – | – |
| – | – | S43020 | – | X12CrMoS17 | Z10CF17 | – |
| 00Cr17 | SUS430LX | – | – | – | – | – |
| 1Ch17Mo | SUS434 | 434 | – | – | – | – |
| – | – | S43400 | 434S19 | X6CrMo17 | Z8CD17.01 | – |
| 00Cr17Mo | SUS436L | – | – | – | – | – |
| 00Cr18Mo2 | SUS444 | – | – | – | – | – |
| 00Cr27Mo | SUSXM27 | XM27 | – | – | – | – |
| – | – | S44625 | – | – | Z01CD26.1 | – |
| 00Cr30Mo2 | SUS447J1 | – | – | – | – | – |
| 1Ch12 | SUS403 | 403,S40300 | 403S17 | – | – | – |
| 1Cr13Mo | SUS410J1 | – | – | – | – | – |
Density Chart for Welding Stainless Steel Pipes
| Note | Density (g/ cm3 ） |
| 1Cr18Ni9 0Cr19Ni19 00Cr19Ni11 0Cr18Ni11Ti (1Cr18Ni9Ti) |
7.93 |
| 0Cr25Ni20 0Cr17Ni12Mo2 00Cr17Ni14Mo2 0Cr18Ni11Nb |
7.98 |
| 00Cr17 | 7.70 |
| 0Cr13 00Cr18Mo2 |
7.75 |
These are some of the most commonly used stainless steel densities. Data may not be completely accurate and is provided for reference only.
If you are just doing a rough calculation, you can use the overall steel density of 7.85g/cm³ for your calculations. The deviation will not be very large (however, for 316, the material price is very high, so a rough estimate will have a large discrepancy).
For standard materials, we can use relative theoretical data to calculate the weight. The formula is:
Weight (kg) = Thickness (mm) * Width (m) * Length (m) * Density value (g/cm³)
These are some of the most commonly used stainless steel density tables, provided for reference only. If you are just making an estimate, you can calculate using the steel's overall density of 7,850kg/cm³.
