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Alloy Structure Steel 4140 |good workability Alloy Structure Steel 4140 steel round bar

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Price : USD 500



Alloy Structure Steel 4140 |good workability Alloy Structure Steel 4140 steel round bar


CHEMICAL COMPOSITION
CHEMICAL COMPOSITIONS(%)
CSiMnPSCrMoVNiOther
 0.38-0.45 0.17-0.37 0.50-0.80 â‰¤0.035 â‰¤0.035 0.90-1.20 0.15-0.25 - - -
PRODUCT DESCRIPTION
Steel GradeAISI 4140/DIN 1.7225/JIS SCM440/GB 42CrMo
Size & DimensionDia:20-120mm L:2000-5800mm
Surface treatmentBlack/Peeling/Polishing/Machined
TechniqueCold/Hot rolled, Cold-Drawn or Hot Forged
Heat TreatmentAnnealed; Quenched; Tempered
Delivery ConditionHot Rolled or Forged/Peeled or Black Surface/Annealed or QT
TestSGS/UT100%/Elements Testing
CertificateISO/Mill Certificate
AVAILABLE Steel TypeRound bar/Plate

AVAILABLE SIZE:

Round bar: Diameter(mm) Max 800mm; Length(mm) Max 12000mm.

Plate: Thickness(mm) Max 800mm; Width(mm) Max 2300mm; Length(mm) Max 12000mm.

Condition: Cold rolled(drawn)≤50mm, Hot rolled≤12-250mm, Hot forged≥50mm.

 

AISI 4140/DIN 1.7225 Introduction:

AISI 4140 alloy steel is chromium, molybdenum, manganese containing low alloy steel. It has high fatigue strength, abrasion and impact resistance, toughness, and torsional strength.

 

Fabrication and Heat Treatment:

1. Forging

Preheat the steel carefully, then raise the temperature to 1150-1200°C for forging. Do not forge below 850°C.

2. Annealing

Heat the AISI 4140 slowly to 800-850°C and allow enough time for the steel to be thoroughly heated. Cool slowly in the furnace to 480°C followed by air cooling.

3. Stress Relieving

When parts are heavily machined, ground or otherwise subject to cold work, stress relieving will be beneficial prior to hardening.

4. Hardening

AISI 4140 steel is usually supplied ready heat treated to 18-22HRC. If further heat treatment is required annealed AISI 4140 should be heated slowly to 840-875°C and after adequate soaking at this temperature quench in oil. Temper as soon as the tools reach room temperature.

5. Tempering

Heat the AISI 4140 carefully to a suitable temperature selected by reference to a tempering chart or table (usually between 550-700°C, soak at the temperature for 2 hours per 25mm of ruling section, then allow to cool in air. Tempering between 250-375°C is not advised as tempering within this range will seriously reduce the impact value.

6. Surface Treatment

Plate: Origin Black, Orign cold rolled bright, Machined, Grinded

Bar: Origin Black, Orign cold rolled(drawn) bright, Turned, Peeled, Grinded

About us

About us

Dongguan Songshun Mould Steel Co.,Ltd.is located in Chang\'an Town -the famous town ofmold in Pearl River Delta of China.After 15 years\' development,now we have the capacity toprovide complete services from manufacturing and marketing to distributing.The main gradesof tool steel and special steel which we market are listed as follows:

Hot work steel:H13,H21,1.2714,etc.Cold work steel:D2,D3,D6,01,A2,etcPlastic Mould Steel:P20,1.2738,1.2083,1.2767,1.2312,1.2316 etc.HSS:M2,M35,M42,etc.Alloy Steel:4140,42CrMo4,4130,4340,8620,5140,5160,6150,4135,52100,etcCarbon Steel:Q235,Q345,1045,1084,etc

As a large-scale wholesaler and retailer,we have the excellent service organization andfirst-class marketing personnel.We have been specialized in domestic and overseas marketsfor many years,and have established qood and stable business relationships with many overseas clients.

Because of our high-quality products,timely delivery,competitive price and good service,we have won high praises from all our customers.

We always insist on the idea of \"The quality is first,the is supreme\",and inherit the principle of \"equality,equity and reciprocity\".We sincerely hope to cooperate withmore importers,and make progress together.

songshunmoldsteel41404340


  • Product Details
  • Brand :
  • Place of Origin : China
  • FOB Price : USD 500
  • Minimum Order Quantity : 1 Ton/Tons(Min. Order)
  • Supply Ability :
  • Packaging & Delivery
  • Packaging Detail :
    1.Normally Neutral packaging inside and Wooden cases for outer packing. 
    2.According to requirement from customers.
  • Delivery Detail : Not Given
  • Keywork : Alloy Structural steel