Seven Star Speciality Steel
Seven Star Speciality Steel
Malabar Hill, Mumbai, Maharashtra
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Steel Round Bar

Manufacturer of a wide range of products which include k310 rounds rolls, round bar (c-45), hot die steel bar (h13 grade), hot-tool steel bar (kda 1), steel roller round bars and hot die steel bar (h-21 grade).

K310 Rounds Rolls

K310 Rounds Rolls
  • K310 Rounds Rolls
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Approx. Price: Rs 90 / PieceGet Latest Price

Product Details:

BrandSeven Star
Usage/ApplicationConstruction
Thickness/Diameter150-235 mm
MaterialCarbon Steel

Alloy steel rounds grade K310 Rounds For Rolls imported make Forged annealed VD route  Prime virgin material with mill approved by quality rolls manufacturers across India.
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Round Bar (C-45)

Round Bar (C-45)
  • Round Bar (C-45)
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Approx. Price: Rs 50 / PieceGet Latest Price

Product Details:

BrandSeven Star
MaterialCarbon Steel
UsageIndustrial
Thickness3-15 mm

We offer our client an excellent quality range of non-alloy steel Round Bar (C-45) which are manufactured from high-grade quality raw materials. These steel round bar can be customized as per our precious customer's specifications. These steel round bars are widely known for its durability and quality. Our steel round bar can be availed at industrial leading price.
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Hot Die Steel Bar (H13 Grade)

Hot Die Steel Bar (H13 Grade)
  • Hot Die Steel Bar (H13 Grade)
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Approx. Price: Rs 250 / PieceGet Latest Price

Product Details:

BrandSeven Star
Usage/ApplicationIndustrial
Thickness/Diameter4-25 mm
MaterialCarbon Steel

We are offering our clients, a wide range of Hot Die Steel Bar (H13 Grade) that is deigned in compliance with international quality standards. Our range is procured from the reliable vendors of the market who manufactured the range by using high -quality raw material with better processing and servicing properties.

Specification :
AMS 6408
ASTM A681 (H-13)
SAE J437 (H13)
SAE J438 (H13)
SAE J467 (H13)
UNS T20813

 

Chemistry Data
Carbon0.32 - 0.45
Chromium4.75 - 5.5
Manganese0.2 - 0.5
Molybdenum1.1 - 1.75
Phosphorus0.03 max
Silicon0.8 - 1.2
Sulphur0.03 max
Vanadium0.8 - 1.2

 

Physical Data
Density (lb / cu. in.)0.283
Specific Gravity7.8
Melting Point (Deg F)2600
Modulus of Elasticity Tension29

 

General Description :

Principal Design Features:

  • This alloy is one of the Hot Work, Chromium type tool steels. It also contains molybdenum and vanadium as strengthening agents. The chromium content assists this alloy to resist softening if used at higher temperatures.


Applications:

  • H13 finds applications for hot die work, die casting and extrusion dies.


Machinability:

  • Machinability of H13 is medium to good. It rates as 75% that of the W group water-hardening tool steels which are low alloy and of generally good machinability.


Forming:

  • H13 has good ductility and may be formed by conventional means.


Welding:

  • This alloy is weldable. Contact the alloy supplier for information on welding procedures.


Heat Treatment:

  • Preheat to 1500 f and then heat to 1850 F. Hold at 1850 f for 15 to 40 minutes and then air cool (air quench).


Forging:

  • Forge at 1975 F down to 1700 F. Do not forge below 1650 F.


Hot Working:

  • No data are given other than for "Forging".


Cold Working:

  • This alloy may be cold worked by conventional methods.


Annealing:

  • Anneal at 1600 F followed by slow furnace cooling at a maximum of 40 F per hour.


Aging:

  • Not applicable to this alloy.


Tempering:

  • Temper at 1000 F to 1200 F for Rockwell C of 53 to 38. It is advisable to do a double temper by repeating the process and use 1 hour at temperature each time.


Hardening:

  • See "Heat Treating" and "Tempering".

 

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Hot-Tool Steel Bar (KDA 1)

Hot-Tool Steel Bar (KDA 1)
  • Hot-Tool Steel Bar (KDA 1)
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Approx. Price: Rs 280 / KilogramGet Latest Price

Product Details:

Minimum Order Quantity1000 Kilogram
ApplicationConstruction
Thickness2-30 mm
BrandSeven Star
MaterialCarbon Steel

Hot-Tool Steel (KDA 1) imported and supplied by us is general-purpose hot-tool steel. These products are known to have a higher strength at high temperature and tenacity than the general-purpose hot-tool steel KDS (equivalent to SKD61). We have built an advanced quality testing facility, wherein we stringently test these products before dispatching to the market.

Features:

Superior heat-check resistance:

  • Hard to crack in comparison with the SKD61, and has a finer structure. Has superior heat-check resistance equivalent to the KDA1S and offers a longer service life


Superior Tenacity:

  •  80% or higher tenacity than the SKD61 (in the T direction) Good tenacity equivalent to the KDA1S.

 
 Superior heat-softening resistance:

  • Twice as high heat-softening resistance as the SKD61 maintains high hardness for a long time

 

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Steel Roller Round Bars

Steel Roller Round Bars
  • Steel Roller Round Bars
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Approx. Price: Rs 80 / onwardsGet Latest Price

Product Details:

BrandSeven Star
Usage/ApplicationConstruction
Thickness/Diameter5-25 mm
MaterialCarbon Steel

Grade: 52100 (En-31) Hot Forged, Sp Annealed, Rough Turned this process makes it more suitable for making rollers. Material Quality is proven and approved by many companies across PAN India.
Specialty for making Steel Roller Round Bars, rolling mill rollers.
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Hot Die Steel Bar (H-21 Grade)

Hot Die Steel Bar (H-21 Grade)
  • Hot Die Steel Bar (H-21 Grade)
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Approx. Price: Rs 350 / KilogramGet Latest Price

Product Details:

Minimum Order Quantity500 Kilogram
BrandSeven Star
Usage/ApplicationInsdustrial
Thickness/Diameter4-50 mm
MaterialCarbon Steel

We are instrumental in offering a wide range of Hot Working Tool Steels to our valuable clients. The offered range further comprises Hot Die Steel (H 21) . Using quality-approved material these products are developed as per the current market requirements at our clients' end

Chemistry Data
Carbon0.26 - 0.36Chromium27456IronBalanceManganese0.15 - 0.4Phosphorus0.03 maxSilicon0.15 - 0.5Sulphur0.03 maxTungsten40306Vanadium0.3 - 0.6

Physical Data
Density (lb / cu. in.)0.296Specific Gravity8.2Melting Point (Deg F)2610Modulus of Elasticity Tension29

General Description :

Principal Design Features
This alloy is one of the Hot Work, tungsten containing tool steels. The tungsten content is beneficial for hot strength at red heat, although toughness is somewhat reduced.

Applications
Used for hot working dies and tooling such as die casting, extrusion and hot forming of parts.

Machinability
The tungsten content makes H21 somewhat difficult to machine. As compared to the W group of water hardening low alloy steels rated at 100& for machinability the H21 would rate 55%

Forming
The alloy may be formed by conventional means.

Welding
This alloy may be welded. Consult the supplier for details.

Heat Treatment
Preheat to 1500 F and then heat rapidly to 2150 F. Hold at 2150 F for 2 to 5 minutes and then air cool (quench) or oil quench.

Forging
Forge at 2100 f down to 1700 F. Do not forge below 1650 F.

Hot Working
See "Forging".

Cold Working
H21 may be cold worked by conventional methods.

Annealing
Anneal at 1625 F and slow furnace cool at less than 40 F per hour.

Aging
Not applicable to this alloy.

Tempering
Tempering is done at 1100 F to 1250 F for Rockwell C hardness of 54 to 36. A double temper treatment should be done at the temperature selected and the parts should be held at temperature for 1 hour.

Hardening
See "Heat Treating" and "Tempering".

Mechanical Data :
MSO currently has no data available for this grade.




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Carbon Steel Round Bars

Carbon Steel Round Bars
  • Carbon Steel Round Bars
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Approx. Price: Rs 50 / PieceGet Latest Price

Product Details:

Material GradeC-45 (En-8)
BrandSeven Star
Usage/ApplicationConstruction
Thickness/Diameter150-330 mm
Size180-550 mm




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High Carbon Spring Steel

High Carbon Spring Steel
  • High Carbon Spring Steel
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Approx. Price: Rs 60 / PieceGet Latest Price

Product Details:

ApplicationConstruction
MaterialCarbon Steel
Thickness5-50 mm
BrandSeven Star

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Pranav Vinod Doshi (Proprietor)
No. 105/106, Building No. 9, Coover Mansion, 1st Parshiwada Nanubhai Desai Road
Malabar Hill, Mumbai- 400004, Maharashtra, India



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