Grade : | 20MnB5 | |
Number: | 1.5530 | |
Classification: | Alloy special steel with boron | |
Standard: |
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C | Si | Mn | P | S | B |
0.17 - 0.23 | max 0.4 | 1.1 - 1.4 | max 0.025 | max 0.035 | 0.0008 - 0.005 |
Nominal diameter (mm): | to 16 | 16 - 40 |
Rm - Tensile strength (MPa) (+QT) | 900-1050 | 750-900 |
Nominal diameter(mm): or for flat products thickness: to 8; 8-20; | to 16 | 16 - 40 |
Re - Upper yield strength or Rp0.2 - 0.2% proof strength (MPa) (+QT) | 700 | 600 |
Nominal thickness (mm): | to 16 | 16 - 40 |
A - Min. elongation Lo = 5,65 √ So (%) (+QT), round products | 14 | 15 |
Nominal diameter (mm): or for flat products thickness: to 8; 8-20; | to 16 | 16 - 40 |
Z - Reduction in cross section on fracture (%) (+QT) | 55 | 55 |
EU EN | Germany DIN,WNr | France AFNOR | England BS | |||
20MnB5 |
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ReH | Minimum yield strength / Mindestwert der oberen Streckgrenze / Limite d elasticite minimale |
Rm | Tensile strength / Zugfestigkeit / Resistance a la traction |
A | Minimum elongation / Mindestwert der Bruchdehnung / Allongement minimal |
J | Notch impact test / Kerbschlagbiegeversuch / Essai de flexion par choc |
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Chemical composition of steel 20MnB5 (1.5530), Standards of steel 20MnB5 (1.5530) Mechanical Properties of steel 20MnB5 (1.5530) Equivalent grades of steel 20MnB5 (1.5530) steel 20MnB5 (1.5530) Tensile Strength, Elongation, Proof strength , Hardness |