20MnB5 Slip On Plate Flanges 1.5530 Steel Forged Plate Flanges

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Product Description

Grade :

20MnB5

Number:

1.5530

Classification:

Alloy special steel with boron

Standard:

EN 10083-3: 2006 Steels for quenching and tempering. Technical delivery conditions for alloy steels

Chemical composition % of steel 20MnB5 (1.5530): EN 10083-3-2006

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

Mechanical properties of steel 20MnB5 (1.5530)

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 R_p0.2 - 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

Equivalent grades of steel 20MnB5 (1.5530)

EU
EN

Germany
DIN,WNr

France
AFNOR

England
BS

20MnB5

19MnB4

20MB5

170H20

Mechanical properties

R_eH	Minimum yield strength / Mindestwert der oberen Streckgrenze / Limite d elasticite minimale
R_m	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

Heat treatment conditions

+A	Soft annealed
+AC	Annealed to achieve spheroidization of the carbides
+AR	As rolled
+AT	Solution annealed
+C	Cold drawn / hard
+CR	Cold rolled
+FP	Treated to ferrite-pearlite structure and hardness range
+I	Isothermal annealing
+LC	Cold drawn / soft
+M	Thermo mechanical rolling
+N	Normalized
+NT	Normalized and tempered

+P	Precipitation hardened
+PE	Peeled
+QA	Air quenched and tempered
+QL	Liquid quenched and tempered
+QT	Quenched and tempered
+S	Treated to improve shearability
+SH	As rolled and turned
+SR	Cold drawn and stress relieved
+T	Tempered
+TH	Treated to hardness range
+WW	Warm worked
+U	Untreated

Alloy special steel with boron
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