28B2 1.5510 - DIN EN 10263-4-2018

Grade	28B2
Germany W-Nr.	1.5510
Corresponding Standard	DIN EN 10263-4-2018 Steel rod, bars and wire for cold heading and cold extrusion Part 4: Technical delivery conditions for steels for quenching and tempering
Classification	Alloy Steel

28B2 Chemical Element Composition Content (%)

Component	C	Si ^ⓔ	Mn	P	S	Cr ^ⓕ	Cu	B
Minimum Value	0.25	-	0.6	-	-	-	-	0.0008
Maximum Value	0.3	0.3	0.9	0.025	0.025	0.3	0.25	0.005

28B2 Mechanical Properties

condition	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Reduction of Area ψ %
Bar, rod, wire; 5<d≤25	Untreated or Pickling (+U or +PE)	≤630	≥60
Bar, rod, wire; 5<d≤25	Spheroidizing or Spheroidizing and Peeling (+AC or +AC+PE)	≤520	≥64
Wire; 5<d≤10	Untreated and Cold Drawn (+U+C)	≤720	≥55
Wires; 10<d≤25	Untreated and Cold Drawn (+U+C)	≤710	≥55
Wire; 2<d≤5	Unheated, Cold Drawn, and Spheroidized (+U+C+AC)	≤510	≥66
Wire Rods; 5<d≤25	Unheated, Cold Drawn, and Spheroidized (+U+C+AC)	≤500	≥66
Wire; 2<d≤5	Unheated, Cold Drawn, Spheroidized, and Quenched Rolling (+U+C+AC+LC)	≤550	≥64
Wire Rods; 5<d≤25	Unheated, Cold Drawn, Spheroidized, and Quenched Rolling (+U+C+AC+LC)	≤540	≥64
Wire; 5<d≤10	Spheroidizing + Cold Drawn (+AC+C)	≤610	≥59
Wires; 10<d≤25	Spheroidizing + Cold Drawn (+AC+C)	≤600	≥59

Approximate Comparison Table structural alloy steel

28B2 Corresponding Standards(Same grade name, different standards)

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!