Hot:

Product categories

More »

Stainless steel

Stainless Steel specifications held in the austenitic, martensitic and precipitation hardening varieties. Stocks are held in British Standard and International standards. Below is listed our most commonly supplied grades; please contact our sales office. Also stock is 301 stainless spring temper rolled strip.

Free Cutting Steel

Cutting steel (free cutting steel) in the steel added a certain amount of one or more of sulfur, phosphorus, lead, calcium, selenium, tellurium and other cutting elements, in order to improve the cutting of steel. Also known as the automatic machining of steel, referred to as auto steel. Such steel can be larger at higher cutting speeds and cutting depth.

Steel mould

Steel mould and Steel mould suppliers, global delivery, stock supply Steel mould steels.

Heat resistant steel

Heat resistant steel. AS Orlov Izobret. Mashinostr. 3, 48-49, 7/2000. The purpose of this work was to increase plasticity of heat resistant steel after aging at the 500-1300 deg C temperature and to improve its operational reliability.

Tool steel

Comprehensive stocks held of tool steel, including hot work, cold work and plastic mould tool steel specifications. Below we detail our most common grades. Other British Standard and international special steels and tool steels are also available, please contact our sales office.

Ball bearing steel

Supplies Ball bearing steel of all types, along with carbon steel and specialty balls, to OEM's around the world. Also offers platinum balls, brass balls, gold, titanium, aluminum, carbon and plastic balls.

Spring steel

Carbon spring steel is held in a wide range of sizes. Detailed below are our most common specifications. Carbon steel strip and spring steel sheet is available most commonly in the hardened and tempered condition, though certain sizes are available in the annealed condition. Round and flat bar is stocked in the as rolled condition. Most spring steel specifications are held to British Standard steel specifications including BS1449 & BS970.

Alloy steel

Alloy steel is steel alloyed with a variety of elements in total amounts of between 1.0% and 50% by weight to improve its mechanical properties. Alloy steels are broken down into two groups: low alloy steels and high alloy steels. The difference between the two is somewhat arbitrary: Smith and Hashemi define the difference at 4.0%, while Degarmo, et al., define it at 8.0 %.[1][2] Most commonly, the phrase "alloy steel" refers to "low alloy" steels.

Valve Steel

Single Figures are Maximums 0.47/0.57 C, 8.00/10.00 Mn, 0.25 Si, 20.00/22.00 Cr, 3.2/4.5 Ni, 0.38/0.50 N, Bal. Fe A nitrogen-strengthened, austenitic alloy. Has been used in heavy-duty valve applications for internal combustion engines.

News

More »

Enterprise email

Home » Valve Steel » Product introduction

DIN 1.4882 ( X50CrMnNiNb21-9) Valve Steel

  • Numbers: 201103030314
  • Model: steel round bar
  • Producers: Jiangyou Sichuan China
  • Update time: 2011.05.13
  • Browse:

Product Description:

Material number 1.4882     -     X50CrMnNiNbN21-9
 
Composition in % :
C
Si
Mn
P
S
Cr
Mo
Ni
0,45 - 0,55
max. 0,45
8,00 - 10,00
max. 0,050
max. 0,030
20,00 - 22,00
 
3,50 - 5,00
 
V
W
Ti
Cu
Al
Nb
B
N
 
0,80 - 1,50
 
 
 
1,80 - 2,50
 
0,40 - 0,60

Range of application and heat treatment :
Heat resisting steel / Valve steel : outlet valves in combustion engines , high strainability 
Solution annealing : 1160 - 1200 °C (water)          Tempering : 760 - 815 °C 
General and distinctive features :
 

Hot Forming Temperature, Thermal Conductivity, Specific Heat Capacity and Thermal Expansion
Material
Hot Forming Temperature
Thermal Conductivity W/(m.K)
Specific Heat Capacity J/Kg. K
Mean coefficient of Thermal Expansion *
10 exp(-6).K(-1)
214N (349S52)
1150-950 Deg C
14.5
500
100 Deg.C 15.5
300 Deg.C 17.5
500 Deg.C 18.5
700 Deg.C 18.8
1.4882
1150-950 Deg C
14.5
500
100 Deg C 15.5
300 Deg C 17.5
500 Deg C 18.5
700 Deg C 18.8
EN24 - (817M40)
 
37.7
460
 
EN52 - (401S45)
1100- 900 Deg C
21
500
100 Deg C 10.9
300 Deg C 11.2
500 Deg C 11.5
700 Deg C 11.8
EN59 - (443S45)
 
 
 
 
Nimonic (80A)
1150-1050
13
460
100 Deg C 11.9
300 Deg C 13.1
500 Deg C 13.7
700 Deg C 14.5

Specific Heat
is the ratio of heat required to raise the temperature of a certain weight of material by 1 Deg C to that required to raise the temperature of the same weight of water by 1 Deg C
* Note - To find the expansion at 300 Deg C of a valve with a stem diameter of 0.275" in 214N material (Assuming the stem diameter was measured at 20 Deg. C) the temperature difference is (300 Deg C - 20 Deg C) = 280 Deg C stem diameter x temperature difference x coefficient of thermal expansion = Expansion of Valve ie:0.275 x 280 x 0.0000175 = 0.0013"
High Temperature Hardness (Stellite No.6 & No.12)

Hardness
Material's (Valve Steels & Tips)
Rockwell 'C' Scale
Vicker’s '30'
214N - (349S52)
30 HRc
318 Vicker's
1.4882
30 HRc
385 Vicker's
EN52 (401S45)
25 - 31 HRc
437 - 395 Vicker's
EN59 (443S65)
28 - 36 HRc
283 - 353.5 Vicker's
EN24 (817M40)
22 - 30 HRc
248 - 302 Vicker's
Nimonic (80A)
32 HRc
Vicker's
Stellite 6 (Seats)
38 - 42 HRc
371 - 412.5 Vicker's
Stellite 12 (Tips)
47 - 50 HRc
485 - 541 Vicker's
EN24 (welded tips)
52 - 54 HRc
541 - 576 Vicker's
1.3343 (welded tips)
Approx. 58 HRc
Vicker's

 

Volumetric Weights
Material +/- 0.5 Grams
Volumetric Weight
214N - (349S52)
7.74 g/cc x (16.38706 x Volume)
1.4882
7.81 g/cc x (16.38706 x Volume)
Nimonic (80A)
8.19 g/cc x (16.38706 x Volume)
EN59 (443S65)
7.74 g/cc x (16.38706 x Volume)
EN52 (401S45)
7.61 g/cc x (16.38706 x Volume)
EN24 (817M40)
7.84 g/cc x (16.38706 x Volume)

 

Introduction to Our Products:

Specialized high quality steel

We have the advantages of equipment, technologies and price

Forging/hot rolling/ extrusion of steel

Specifications

Round bar steel: 1mm to 2000mm

Square-shape steel: 35mm  to  600mm

Plate steel:0.1mm  to  800mm

Width: 10mm to 1500mm

Length: We can supply any length based on the customer's requirement.

Forging: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes

Tubings: OD: φ6-219 mm, with wall thickness ranging from 1-35 mm.

Finished goods condition: hot forging/hot rolling + annealing/normalizing + tempering/quenching + tempering/any conditions based on the customer's requirement

Surface conditions: scaled (hot working finish)/ground/rough machining/fine machining/based on the customer's requirement

Furnaces for metallurgical processing: electrode arc + LF/VD/VOD/ESR/Vacuum consumable electrode.

Ultrasonic inspection: 100% ultrasonic inspection for any inperfections or based on the customer's requirement

Excellent service for all kinds of industries,with advantages of technologies, equipment and price.

We serve you with our honesty, integrity, and professionality.
 

Stainless Steel Suppliers | Hi-Steel HSLA-80 | Steel mould | Heat resistant steel | Tool Steel | Ball bearing steel | Spring steel | Alloy

Copyright 2003 - 2011 China longhai special steel Co., LTD is mainly engaged in all kinds of stainless steel 630 production, wholesale, retail enterprises

TEL:+86-816-3653779 | FAX:+86-816-3639422 | E-mail:sales@special-steel.com | Add:China's sichuan JiangDongLu jiangyou 119 | Zip: 621701