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T. M. A. International
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Stainless Steel Bright Bars & Shafts Alloy/Non-Alloy Steel Bars & Shafts

Stainless Steel Bright Bars & Shafts

T. M. A. International T. M. A. International T. M. A. International

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Grades - Chemical Composition and Equivalent Standards
T. M. A. International  Download PDF

Product Variations/ Specifications

Sizes :-
  • Rounds
    25,26, 27.5, 28.3, 30, 30.5, 32.5, 34, 36, 38, 40, 42, 45, 48, 50, 53, 56, 56.4, 60, 63, 65, 70, 75, 80, 85 & 90 mm Dai.

  • Squares
    50mm, 63mm, 75, 80, 100, 120, 125, 130, 160.
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Condition :-
Grade Size Range Conditions of supply
300 series 25 - 90 mm dia. As rolled and machine straightened. Solution annealed and machine straightened.
400 series 25 - 90mm dia. Annealed and machine straightened.
Hardened + Tempered M/c straightened.
300 series 50mm - 100mm
Sq.120 - 160 mm
Hot rolled + Spot ground.
Hot rolled + Machine ground if specified by Customer.

Dimensional Tolerance :-

1. Dia. Tolerance
Size Range (including ) Tolerance Ovality
25 - 50 mm dia. ± 0.40 0.60 mm
50 - 80 mm dia. + 0.80
- 0.00
0.80 mm
80 - 90 mm dia. + 1.20
- 0
0.00 mm

2. Length
Length specified by customer with a tolerance of ± 0.30m upto maximum length of.6.4m, With 10% shorts down to 3 meters.

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Surface Quality :-
Visual examination shall be carried out to ensure freedom from harmful surface defects.

Localized spot dressing shall be done to remove surface defects, if agreed by customer.

Mechanical Properties :-

1. Certification
Grade Condition Remarks
300 series As rolled Normally only chemistry shall be certified.

Where agreed by customer indicative values of UTS, % E, % RA and hardness shall be given in hot rolled condition or samples shall be tested in solution annealed condition and values certified .
300 series Solution annealed YS, UTS, % E, % RA and hardness as per ASTM, DIN and JIS specifications.
400 series As rolled - No-
400 series Annealed
Tempered
Hardness max. Values.
Hardness range of 50 BHN.


2. Mechanical Properties Typical Values
Grade Size Range Condn. YS UTS % E % RA BHN
300 series 25-45 mm dia

50-90 mm dia.
As rolled

Solution annealed

As rolled

Solution Annealed
30/40

23/26

30/40

23/26
60/72

55/63

62/68

52/60
47/55

55/68

48/58

60/70
60/75

70/80

60/75

70/80
200 Max.

180 Max.

185 Max.

170 Max.


  Grade Hardness HB
400Series 410 160-200 230-270
  416 180 Max. 210-250
  420 200 Max. 230-270
  430 F 165-190 200-260
  431 230-270  
  ( * Hardness at centre upto 38 mm dia. Bars and mid-centre for sizes >38 mm Dia.)

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Identification :-
  1. Each and every bar shall be identified by the grade's color code at one cross section. The heat number shall be painted on the surface of minimum of 10 % of bars in the bundle.
  2. 45 mm diameter to 90mm diameter :
    Each and every bar shall be identified by the grades color code on one cross section and heat number.

    Each bundle shall be identified by a metallic tag giving details of heat number, grade,section, length and customer's name/shipping marks.

End Cut :-
  1. Bars from 25mm to 42mm diameter shall be COLD SHEARED and bars from 45mm to 90mm diameter shall be HOT SAW CUT.
  2. Standard Specification For Stainless Steel Bright Bars

Size & Supply Condition
Grade Size Range Supply Condition
300 Series 3 mm - < 6 mm A +CD+P
  6 mm - 10 mm A+CD+P or HR+CD+P
  >10 mm - 23 mm A+CD+CG/P or HR+CD+CG / P
  >23 mm - 80 mm A+SMT+P/CG
400 Series 6 mm- 23mm A+CD+P/CG
  23 mm - 80 mm A+SMT+P/CG, T+SMT+P/Cg

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Note : A = Solution Annealed, HR = Hot rolled, CD = Cold Drawn, P = Polished, CG = Cenreless Ground, SMT = Smooth turned, T = Tempered
Dimensional Quality
Diameter Tolerance
Size Dia. Tolerance
3 mm - 23 mm h-9 tol or ASTM A484
>23.0 mm - 80.0 mm mm h9/h10 Tol. Or ASTM A484

Length Tolerance
Size Length Tolerance (Min.)
3.0 mm - < 6 mm 50 mm
6 mm - 12 mm 200 mm
12 mm - 23 mm 100 mm
23 mm - 80 mm 50 mm

Mechanical Properties :-
Grade Remarks
300 Series except 303 Shall be as per popular ASTM Standards like A182, A193, A276, A479, A484, A580, ASME Standards like SA 182, SA 193, SA 479 and respective AMS Standards like AMS 5639, 5647, 5648, 5653.
303 Shall be as per popular ASTM standards like. ASTM A582, A484 & AMS 5640P, & respective AMS Standards 5612, 5013.
400 Series except 416 & 430 F Shall be as per popular ASTM Standards like A276 & respective AMS Standards 5612, 5013
430 F As per ASTM A582 & AMS 561

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Stainless Steel Wire Rods
  1. Chemistry : As per Table
  2. Supply Condition
Size Range Grades Condition
5.5 mm - 23.0 mm 300 series & 400 series Hot rolled annealed & pickled 9HRAP )


Special Requirements :-

GRAIN SIZE 5 -8 IN SOLUTION ANNEALED CONDITION AS PER ASTM E12


INCLUSION TYPE THIN SERIES THICK SERIES
SULPHIDE (A) 2.0 (MAX) 2.0 (MAX)
ALUMINA (B) 1.5 (MAX) 2.5 (MAX)
SILICATE (C) 1.5 (MAX) 2.0 (MAX)
OXIDE (D) 1.5 (MAX) 2.0 (MAX)


FERRITE CONTENT DELTA FERRITE CAN BE COMMITTED TO 3% MAX VALUE FOR BAR OF 90 MM DIA & BELOW IN SOLUTION ANNEALED CONDITION


MACRO ETCHING AS PER E381 IT SHALL BE FREE FROM ANY INDICATION IN PLATE II & ACCEPTABLE LIMIT AS PER PLATE I SHALL BE S2, R2,C2


IGC TEST AS PER ASTM A262 PRACTICE A OR E


MICRO STRUCTURE BARS SHALL BE FREE FROM CHROMIUM CARBIDE NETWORK OR ANY COMPLEX CARBIDE & SIGMAPHASE


ULTRASONIC TESTING FOR INTERNAL SOUNDNESS, BARS SHALL BE SUBJECTD TO ULTRASONIC TEST AS PER ASTM A 338 AS AND WHEN REFERRED IN CONTRACT

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Packing Options
Material shall be supplied in bundles of 2.5+/-0.5 MT and tied with signode strap or wires.



Product Testing

Test Certificate :-
The Test Certificate shall include the following details :
  1. Challan number and date.
  2. Heat Number
  3. Grade
  4. Section (size)
  5. Quantity
  6. Supply condition
  7. Chemical composition
  8. Mechanical properties (YS, UTS, % Elongation, % RA and Hardness).
  9. Section quench test for 400 series.
  10. Special requirements if agreed at the time of accepting order.

Special Requirements :-
The basic guidelines are given in Certification table.

Technical requirements other than those stated above shall above shall be accepted After Contract review.


Grades - Chemical Composition and Equivalent Standards
T. M. A. International  Download PDF



Stainless Steel Bright Bars & Shafts Alloy/Non-Alloy Steel Bars & Shafts



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