Round Bar_Round Bar_RUNYING STEEL GROUP

Introduction

Details

PRODUCT LIST

◎ Steel Coil

· Hot Rolled Steel Coil

· Cold Rolled Steel Coil

· Galvanized Steel Coil

· Galvalume Steel Coil

· Prepainted Steel Coil /PPGI

· Anti-fingerprint Steel Coil

◎ Steel Plate / Sheet

· Cold plate

· Hot plate

· Galvanized plate

· Aluminized zinc plate

◎ Steel Roof Sheet

· Galvanized corrugated sheet

· Coated corrugated board

◎ I / H Beam

· Standard

· European standard

◎ U Channel

· National standard

· Daily channel

◎ Wire Rod

◎ Steel Tube / Pipe

· Round tube

· Square tube

· Galvanized round pipe

· Galvanized square tube

◎ Steel Rebar

◎ Flat bar

◎ Round Bar

· National standard

· Japanese standard

◎ Angle bar

Round Bar

Hot-rolled (±0.3mm tol.) or cold-drawn (±0.02mm tol.) round bars in grades 45#-42CrMo, 304-316L, H13. Grain size ≥7, straightness ≤0.5mm/m for shafts, dies and fasteners.

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Product details

Product Name: Precision Hot Rolled/Cold Drawn Round Bar
Overview
Hot-rolled (±0.3mm tol.) or cold-drawn (±0.02mm tol.) round bars in grades 45#-42CrMo, 304-316L, H13. Grain size ≥7, straightness ≤0.5mm/m for shafts, dies and fasteners.

Technical Specifications

Parameter	Hot Rolled	Cold Drawn
Diameter Range	Φ10-300mm	Φ3-80mm
Tolerance	DIN EN 10059 Class 4	ISO 2868 h9
Surface Finish	As-rolled/Turned (Ra 3.2μm)	Ground (Ra 0.4μm)/Peeled (Ra 0.8μm)
Material Strength	45#: Yield≥355MPa	GCr15: HRC 60-62
Straightness	≤1mm/m	≤0.3mm/m
Heat Treatment	Normalized/Annealed	Spheroidized Annealed
NDT Standard	UT Class C (EN 10308)	MPI Class A (ISO 4986)

Key Advantages

1. Precision Dimensional Control

Cold drawn: Diameter tol. ±0.015mm
Hot rolled: Ovality ≤0.15mm
2. Customized Properties

Application	Material Solution	Key Performance
Engine Crankshafts	42CrMoH	Tensile ≥ 900MPa Impact ≥ 40J
Injection Mold Cores	H13 ESR	HRC 48-52 Purity ≤ 0.5 Grade
Aerospace Fasteners	A286 Superalloy	650℃ Stress Rupture ≥ 300MPa

3. Global Compliance
USA: ASTM A29
EU: EN 10060
Japan: JIS G4051