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At Economic Forge Pvt. Ltd. (EFPL) we specialize in the processing and supply of stainless steel round bars in the various Martensitic and Ferritic (also known as the ‘400 series’ or ‘Chromium’) grades.

The grades most commonly produced by us are as follows:

Martensitic:

•  AISI 410 | DIN 1.4006 | X12Cr13

•  AISI 416 | DIN 1.4005 | X12CrS13

•  AISI 420 | DIN 1.4021 | X20Cr13

•  AISI 431 | DIN 1.4057 | X17CrNi16-2
 
Ferritic:

•  AISI 430 | DIN 1.4016 | X6Cr13

•  AISI 430F | DIN 1.4104 | X14CrMoS17

 

We offer both Bright Bars and Hot-Rolled (Black) Bars in the above mentioned grades across a wide diameter range from 9mm – 160mm.

Details of products we produce are as below:
 

BRIGHT BARS:

SUPPLY CONDITION DIA RANGE DIA TOL
H/T or Annealed + Peeled + Centreless Ground 9 – 80mm e8, f8, h8, h9, h11
H/T or Annealed + Peeled + Centreless Ground + Polished * 16 – 40mm e8, f8, h8, h9
H/T or Annealed + Peeled (Rough Turned) 20 – 155mm K12/13 (Plus Tol.)

* Can be offered with Ra value upto 0.4 (max)

 

HOT-ROLLED (BLACK) BARS:

SUPPLY CONDITION DIA RANGE DIA TOL
H/T or Annealed + Straightened                        12 – 160mm N/A

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Chemical Composition of Martensitic and Ferritic Grades
Standard: EN 10088-3

GRADE C Si Mn P S Cr Ni Mo
(max) (max) (max) (max) ( max) (max) (max)
1.4006 0.08-0.15 1.00 1.50 0.04 0.03 11.50-13.50 0.75
1.4021 0.15 (min) 1.00 1.50 0.04 0.03 12.00-14.00
1.4005 0.08-0.15 1.00 1.50 0.04 0.15-0.35 12.00-14.00 0.60
1.4016 0.08 1.00 1.00 0.04 0.03 16.00-18.00
1.4104 0.10-0.17 1.00 1.50 0.04 0.15-0.35 15.50-17.50 0.20-0.60
1.4057 0.12-0.22 1.00 1.50 0.04 0.03 15.00-17.00 1.50-2.50

 

Standard ASTM

GRADE C Si Mn P S Cr Ni Mo
(max) (max) (max) (max) (max) (max) (max)
AISI 410 0.08-0.15 1.00 1.00 0.04 0.03 11.50-13.50
AISI 420 0.15 (min) 1.00 1.50 0.04 0.03 12.00-14.00
AISI 416 0.15 1.00 1.50 0.04 0.15-0.35 12.00-14.00
AISI 430 0.12 1.00 1.00 0.04 0.03 16.00-18.00
AISI 430F 0.12 1.00 1.25 0.06 0.15(min) 16.00-18.00 0.75
AISI 431 0.20 1.00 1.00 0.04 0.03 15.00-17.00 1.25-2.50

 

Mechanical Properties of Martensitic and Ferritic Grades
Standard: EN 10088-3

Tensile Strength Yield Elongation Hardness
GRADE N/mm2 N/mm2 % BHN
(min) (min) (max)
1.4006 A 730 (max) 220
1.4006 QT 650 650 – 850 450 15
1.4021 A 760 (max) 230
1.4021 QT 700 650 – 850 450 15
1.4021 QT 800 800-950 600 12
1.4005 A 730 (max) 220
1.4005 QT 650 650-850 450 12
1.4104 A 730 (max) 220
1.4005 QT 650 650-850 500 12 (up to 60mm)
10 (60mm – 160mm)
1.4057 A 950 (max) 220
1.4057 QT 800 800 – 950 600 14 (up to 60 mm)
12 (60mm -160mm)
295
1.4057 QT 900 900 – 850 700 14 (up to 60 mm)
10 (60mm -160mm)

 

Standard: ASTM A 276

Tensile Strength Yield Elongation Reduction Hardness
GRADE N/mm2 N/mm2 % % BHN
(min) (min) (min) (min) (max)
AISI 410A 480 275 20 45
AISI 410T 690 550 15 45
AISI 420 A Hot Finished 241
AISI 420A Cold Finished 450 255
AISI 431A Hot/Cold Finished 800-950 600 255-285

 

Standard: ASTM A 479

Tensile Strength Yield Elongation Reduction Hardness
GRADE N/mm2 N/mm2 % % BHN
(min) (min) (min) (min) (max)
AISI 410A 485 275 20 45 223
AISI 410T cond. II 760 585 15 45 223-269
AISI 431 A 277
AISI 431 T 795 620 15 45 321