En 30crnimo8 Alloy Steel Round Bar / Alloy Steel Rod Diameter 10 - 320mm

• Type: Alloy Steel Bar
• Standard: AISI, ASTM, DIN, JIS, GB
• Composition: 30crnimo8
• Technique: Hot Rolled
• Shape: Bar
• Surface Treatment: Black
• Model NO.: 30CrNiMo8
• Special Use: High-strength Steel Plate, Wear Resistant Steel, Silicon Steel, Cold Heading Steel, Free Cutting Steel, Mold Steel
• Application: Structural Steel Bar
• Length: 6m or Cutting Any Length as Request
• Other Shape: Flat, Square, Hexagonal
• Other Products: Pipe, Plate, Sheet, Coils
• Service: Cutting . Heat Treatment
• Transport Package: Standard Worthy Packing
• Specification: 10 - 350mm in stock
• Trademark: DELTA
• Origin: China
• HS Code: 7214200000
• Production Capacity: 500 Ton Per Month

Product Description

PRODUCTS SPECIFICATION

EN 30CrNiMo8 Alloy Steel Round Bar / Alloy Steel Rod Diameter 10 - 320mm Steel Bars

Products Specification

 

Products Name	30CrNiMo8 Alloy Steel Round Bar
Diameter	10 - 320mm
Length	6m or custom cutting any length as request
Type	Hot Rolled
Brand	BAOSTEEL DELTA DONGBEI HUAXI SHAGANG.etc
MOQ	1 Ton
Loading Port	Shanghai Port
Packing	packing by steel wire rope
Deliver time	5 - 7 days  for stock materials
Other Grade	Q195,Q235,10#,20#,35#,45#,Q215,Q345,12Cr1Mov, 15CrMo,304,316,20Cr,40Cr,20CrMo,35CrMo,42CrMo, 40CrNiMo,GCr15,65Mn,50Mn,50Cr,3Cr2W8V,20CrMnTi,5CrMnMo
Standard	ASTM GB EN DIN
Application	Structure and Industrial

 

Regular Standard Size of our 30CrNiMo8  Round Bar in Stock

 

Standard Diameter

10 12 15 18 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 120 130 140 150 160 180 200 210 220 230 250 270 300

MATERIAL DESCRIPTION

 

The 30CrNiMo8 type of steel is made mostly for forming into wrought products. It is considered a structural steel and has medium hardenability yet it can accommodate heavy-duty components. It offers high elasticity and strength properties and when it is softened, the hardness level reaches a maximum of 248 HRB. It has a lot of resistance to various impacts and loads, but it is not all that great for welding. It also generally requires additional preheating before you can truly do anything with it.

Most companies that sell alloy steel products offer round bars, rolled or heat-treated, as well as other items made out of this steel.

Composition of the 30CrNiMo8:

C	Cr	Mn	Mo	Ni	P	S	Si
0.26-0.34	1.80-2.20	0.50-0.80	0.30-0.50	1.80-2.20	0.025max	0.035max	0.40max

 

 Mechanical properties of 30CrNiMo8, 1.6580

• Dimensions <16mm
  • Tensile strength, Rm 1250 - 1450 N/mm2
  • Yield strength, Re: >1050 N/mm2
  • Elongation, A: >9%
  • Necking, Z: >40%
• Dimensions 16-40mm
  • Tensile strength, Rm 1250 - 1450 N/mm2
  • Yield strength, Re: >1050 N/mm2
  • Elongation, A: >9%
  • Necking, Z: >40%
• Dimensions 40-100mm
  • Tensile strength, Rm 1100 - 1300 N/mm2
  • Yield strength, Re: >900 N/mm2
  • Elongation, A: >10%
  • Necking, Z: >45%
  • Impact strength, KV: >35 J
• Dimensions 100-160mm
  • Tensile strength, Rm 1000 - 1200 N/mm2
  • Yield strength, Re: >800 N/mm2
  • Elongation, A: >11%
  • Necking, Z: >50%
  • Impact strength, KV: >45J
• Dimensions 160-330mm:
  • Tensile strength, Rm >850 N/mm2
  • Yield strength, Re: >630 N/mm2
  • Elongation, A: >12%
  • Impact strength, KV: >45 J
• Dimensions >330mm
  • Tensile strength, Rm >800 N/mm2
  • Yield strength, Re: >590 N/mm2
  • Elongation, A: >12%
  • Impact strength, KV: >40 J

 

Heat treatment of 30CrNiMo8, 1.6580 steel

• Softening annealing at a temperature of 640 - 680ºC
• Normalizing annealing at a temperature of 840 - 860ºC
• Hardening with cooling in oil at 815 - 845ºC
• Tempering with cooling in air at 550 - 650ºC

Applications of this type of alloy steel include mostly components for automotive and mechanical engineering. Parts have to be designed for optimum toughness or strength to perform economically under severe dynamic stress, and that's what this type of steel offers its customers.

Forging and Heat Treatment

To forge the 30CrNiMo8 alloy steel, the forming temperature needs to be 1560 to 1920° Fahrenheit. Normalizing temperatures need to be 1560 to 1600° Fahrenheit, and hardening temperatures should be 1000 to 1250° Fahrenheit and followed by an oil quench. Alloy steel manufacturer facilities usually sell these in bars, and they have medium hardenability design to accommodate a variety of products. Manufacturers do a great job, though, of making sure you get just what you need in the end.

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