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EN10250 DIN 30CrNiMo8 1.6580 30CND8 Rough Turned Alloy Steel Round Bar OD 280mm
EN10250 DIN 30CrNiMo8 1.6580 30CND8 Rough Turned Alloy Steel Round Bar OD 280mm
EN10250 DIN 30CrNiMo8 1.6580 30CND8 Rough Turned Alloy Steel Round Bar OD 280mm
EN10250 DIN 30CrNiMo8 1.6580 30CND8 Rough Turned Alloy Steel Round Bar OD 280mm
EN10250 DIN 30CrNiMo8 1.6580 30CND8 Rough Turned Alloy Steel Round Bar OD 280mm
EN10250 DIN 30CrNiMo8 1.6580 30CND8 Rough Turned Alloy Steel Round Bar OD 280mm
Specifications
Brand Name :
DONGBEI TEGANG
Model Number :
30CrNiMo8
Certification :
SGS ISO MTC
Place of Origin :
China
MOQ :
2 Tons
Price :
850 USD/Ton
Payment Terms :
L/C, T/T, Western Union, MoneyGram
Supply Ability :
500 Tons
Delivery Time :
10 days
Packaging Details :
Export Packing
OD :
16-500mm
Length :
6m 9m 12m
Surface :
Black and Bright
Type :
Hot Rolled
Steel grade :
Alloy Steel
Technique :
Hot Rolled,Forged
Application :
Structural Steel Bar,Die Steel Bar,Tool Steel Bar
Standard :
ASTM,DIN,AISI,JIS
Shape :
Round
Product name :
AISI4340 qt alloy steel round bars
Surface treatment :
Black/Peeling/Polishing/Machined
Description

30CrNiMo8|DIN 1.6580 is a heat treatable steel which has at least 1.8%Cr,1.8%Ni,and 0.3%M0 as strengthening alloy elements.It is usually supplied with quenched and tempered condition with a typical tensile strength of 1100 -1300 N/mm². 30CrNiMo8 steel is used for automotive and general components which requires high demands on strength and toughness and good hardenability.It is especially suitable for heavy duty parts in the aviation, automotive and military industries.

1.Supply Form & Size & Tolerance

Hot rolled bar:Φ6-Φ130mm,Length:3000-10000mm

Hot Forged round bar:Φ130-Φ1000mm,Length:3000-10000mm

Flat bar/Blcoks:Thickness :120-800mm xWidth:120-1500mm,Length:2000-6000mm

Surface Finish Tolerance
Black For Forged condition (0,+5mm)
Black For Rolled condition (0,+1mm)
Rough Turned (0,+3mm)
Grinding Best h9
Polished Best h11
Peeled Best H11
Cold Drawn Best H11

2.Chemical Composition

Standard Grade C Si Mn P S Cr Ni Mo
EN10083
30CrNiMo8/1.6580		 0.26-0.34 ≤0.4 0.5-0.8 ≤0.025 ≤0.035 1.8-2.2 1.8-2.2 0.3-0.5
EN10250 0.26-0.34 ≤0.4 0.3-0.6 ≤0.035 ≤0.035 1.8-2.2 1.8-2.2 0.3-0.5

3.Relevant Standards

USA UK France Italy
A320L43 823M30 30CND8 30CrNiMo8

4. Mechanical Property

Diameter d mm ≤ 16 16-40 40-100 100-160 160-250
Yield Strength Mpa ≥900 ≥800 ≥700 ≥600 ≥550
Tensile Strength Mpa 1100-1300 1000-1200 900-1100 800-950 750-900
Elongation, % ≥10 ≥11 ≥12 ≥13 ≥14
Reduction of area ,% ≥45 ≥50 ≥55 ≥60 ≥60
impact,J ≥35 ≥40 ≥45 ≥45 ≥45
Hardness,HB 331-380 298-359 271-331 240-286 225-271

5.Forging

Heat the temperature between 1050℃-1150℃,hold suitable time for the steel to be thoroughly heated.Reheat the steel once temperature below 850°C. 30CrNiMo8 steel has good forging characteristics,but crack is easily occured when improper cooling way after forged,so it should be cooled as slowly as possible in the furnace or in sand after forged.

6.Heat Treatment

  • Normalizing:870℃-880℃,Cool in air
  • Soft Annealing:650℃-700℃,Cooling 10℃ per hour in furnace,max. 248 HB
  • Stress Relieving:50°C under the temperature of tempering
  • Hardening:830 – 860°C,oil or polymer,840-850°C,water
  • Tempering:540°C – 660°C, cool in still air

7.Jominy Test-Hardenability

HRC-mm Type 1.5 3 6 7 9 11 13 15 20 25 30 35 40 45 50
MIN
+H		 48 48 48 48 47 47 47 46 46 45 45 44 44 43 43
MAX 56 56 56 56 55 55 55 55 55 54 54 54 54 54 54
MIN
+HH		 51 51 51 51 50 50 50 49 49 48 48 47 47 47 47
MAX 56 56 56 56 55 55 55 55 55 54 54 54 54 54 54
MIN
+HL		 48 48 48 48 47 47 47 46 46 45 45 44 44 43 43
MAX 53 53 53 53 52 52 52 52 52 51 51 51 51 50 50

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
Chemical composition of steel 30CrNiMo8 (1.6580), Standards of steel 30CrNiMo8 (1.6580)
Mechanical Properties of steel 30CrNiMo8 (1.6580) Equivalent grades of steel 30CrNiMo8 (1.6580)
Tensile Strength, Elongation, Proof strength, Hardness


EN10250 DIN 30CrNiMo8 1.6580 30CND8 Rough Turned Alloy Steel Round Bar OD 280mmEN10250 DIN 30CrNiMo8 1.6580 30CND8 Rough Turned Alloy Steel Round Bar OD 280mmEN10250 DIN 30CrNiMo8 1.6580 30CND8 Rough Turned Alloy Steel Round Bar OD 280mm
EN10250 DIN 30CrNiMo8 1.6580 30CND8 Rough Turned Alloy Steel Round Bar OD 280mmEN10250 DIN 30CrNiMo8 1.6580 30CND8 Rough Turned Alloy Steel Round Bar OD 280mm

Product tags

aisi1117 steel round bar

,

aluminium checkered plate 5083

,

ss 304 flat bar
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EN10250 DIN 30CrNiMo8 1.6580 30CND8 Rough Turned Alloy Steel Round Bar OD 280mm

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Product Detail
Brand Name :
DONGBEI TEGANG
Model Number :
30CrNiMo8
Certification :
SGS ISO MTC
Place of Origin :
China
MOQ :
2 Tons
Price :
850 USD/Ton
Contact Supplier
video
EN10250 DIN 30CrNiMo8 1.6580 30CND8 Rough Turned Alloy Steel Round Bar OD 280mm
EN10250 DIN 30CrNiMo8 1.6580 30CND8 Rough Turned Alloy Steel Round Bar OD 280mm
EN10250 DIN 30CrNiMo8 1.6580 30CND8 Rough Turned Alloy Steel Round Bar OD 280mm

JIANGSU MITTEL STEEL INDUSTRIAL LIMITED

Verified Supplier
11 Years
jiangsu, wuxi
Since 1998
Business Type :
Manufacturer, Distributor/Wholesaler, Agent, Exporter, Seller
Main Products :
Stainless Steel Sheet, Stainless Steel Plates, Stainless Steel Coils
Total Annual :
80Millen-100 Millen
Employee Number :
200~500
Certification Level :
Verified Supplier
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