Chohan Manufacturing
Materials
Carbon steels A105:  Galvanized, Normalized, Plus A694- Y42; Y52; Y60; Y65
A106B, WPB
Stainless steels 304/304L, 316/316L, 310, 317L, 321/H, 347/H, AL6XN (N08367), F44 (254SMO), F51 (2205), F53 (2207) 405, 410, F6A, A904L (N08904), 
Alloy 20 (N08020)
Nickel alloys A400 (N04400), A200 (N02200), A201 (N02201), A800 (N08800), A800H (N08810), A800HT (N08811), A825 (N08825), A600 (N06600), A625 (N06625), C276 (N10276), C-22 ® (N06022), B2 (N10665)
Chrome moly alloys F11, F12, F22, F5, F9, F91, F92
Titanium Grade 1, Grade 2, Grade 3, Grade 4
Aluminum alloys 6061, 5083, 5086
Copper nickel 70/30, 90/10


Carbon Steel Material Grade Composition Chart
NAME ASTM# GRADE UNS # NOMINAL COMPOSITION
CARBON STEEL A105 A105 K03504 C-.35max Mn .6-1.05max P -.04max S-.05max Si-.1-.35
GALVANIZED CARBON ELECTROPLATED A105 B633 A105 K03504 C-.35max Mn .6-1.05max P -.04max S-.05max Si-.1-.35
GALVANIZED CARBON HOT DIPPED A105
A153
A105 K03504 C-.35max Mn .6-1.05max P -.04max S-.05max Si-.1-.35
NORMALIZED CARBON A105N A105N K03504 C-.35max Mn .6-1.05max P -.04max S-.05max Si-.1-.35
LF2 A350 LF2 K03011 C-.30 max Mn-.6-1.35 P-.035max S-.04 max Si-.15-.30
LF3 A350 LF3 K32025 C-.20 max Mn-.90 max P-.035 max S.04 max Ni-3.3-3.7


Stainless Steel Material Grade Composition Chart
NAME ASTM# GRADE UNS # NOMINAL COMPOSITION
304/304L A182 F304/F304L S30403 CR-18.0-20.0 C-.035 max Ni-8.0-11.0
304H A182 F304H S30409 C-.04-.10 Cr-18.0-20.0 Ni-8.0-11.0
310 A182 F310 S31000 C-.15 Cr-24.0-26.0 Ni-19.0-22.0
316/316L A182 F316/316L S31603 C-.035max Cr-16.0-18.0 Mo-2.0-3.0 Ni-10.0-14.0
316H A182 F316H S31609 C-.04-.10 Cr-16.0-18.0 Mo-2.0-3.0 Ni-10.0-14.0
317L A182 F317L S31703 C-.03max Cr-18.0-20.0 Mo-3.0-4.0 Ni-11.0-15.0
321 A182 F321 S32100 C-.08 Cr-17.0min Ni-9.0-12.0 Ti-.70max
321H A182 F321H S32109 C-.04-.10 Cr-17.0min Ni-9.0-12.0 Ti-.70max
347 A182 F347 S34700 C-.08max Cr-17.0-20.0 Ni-9.0-13.0 Cb+Ta-1.10max
347H A182 F347H S34709 C-.04-.10 Cr-17.0-20.0 Ni-9.0-13.0 Cb+Ta-1.10max
AL6XN B462 AL6XN N08367 Cr-20-22 Ni-23.5-25.5 Mo-6-7 Cu-.75max N-.18-.25 C-.03max
F44
( 254SMO)
A182 F44 S31254 Cr-19.5-20.5 Ni-17.5-18.5 Mo-6-6.5 C-.02max Cu-.5-1.0 N-.18-.22
F51
( 2205)
A182 F51 S31803 Cr-21-23 Ni-4.5-6.5 Mo-2.5-3.5 C-.03max N-.08-.20
405 A479 405 S40500 Cr-11.5-14.5 Ni-.60max Al-.10-.30 C-.08max
410 A479 410 S41000 Cr-11.5-13.5 C-.15max
446 A473 446 S44600 Cr-23-27 Ni-.75max N-.25max C-.20max
904L B649 A904L N08904 Cr-19-23 Ni-23-28 Mo-4-5 Cu-1-2 C-.02max
A20 B462 A20 N08020 Cr-19-21 Ni-32-38 Mo-2-3 Cu-3-4 C-.07max Cb+Ta-1.0max


Nickel Alloy Material Grade Composition Chart
NAME ASTM# GRADE UNS # NOMINAL COMPOSITION
ALLOY 200 FORGING B564 A200 N02200 C-.15max Cr-.01max Ni-99min Cu-.25max Fe-.4max
ALLOY 200 BAR B160 A200 N02200 C-.15max Cr-.01max Ni-99min Cu-.25max Fe-.4max
ALLOY 400* FORGING B564 A400 N04400 Ni-63min Cu-28-34 Fe-2.5max
ALLOY 400* BAR B164 A400 N04400 Ni-63min Cu-28-34 Fe-2.5max
* ALLOY 400 can also be furnished to Federal Specifications QQN-281 *
ALLOY 600 FORGING B564 A600 N06600 Ni-72min Cr-14-17 Fe-6-10 Cu-.5max
ALLOY 600 BAR B166 A600 N06600 Ni-72min Cr-14-17 Fe-6-10 Cu-.5max
ALLOY 625 FORGING B564 A625 N06625 Ni-58min Cr-20-23 Fe-5max Cb+-3.75-4.15 Al-.4max Ti-.4max
ALLOY 625 BAR B564 B446 N06625 Ni-58min Cr-20-23 Fe-5max Cb+-3.75-4.15 Al-.4max Ti-.4max
ALLOY 800 FORGING B564 A800 N08800 Ni-30-35 Cr-19-23 Fe-39.5min Al-.15-.60 Ti-.15-.60 C-.10max
ALLOY 800 BAR B408 B408 N08800 Ni-30-35 Cr-19-23 Fe-39.5min Al-.15-.60 Ti-.15-.60 C-.10max
ALLOY 800H FORGING B564 A800H N08810 Ni-30-35 Cr-19-23 Fe-39.5min Al-.15-.60 Ti-.15-.60 C-.05-.10
ALLOY 800H BAR B408 A800H N08810 Ni-30-35 Cr-19-23 Fe-39.5min Al-.15-.60 Ti-.15-.60 C-.05-.10
ALLOY 800HT FORGING B564 A800HT N08811 Ni-30-35 Cr-19-23 Fe-39.5min Al-.15-.60 Ti-.15-.60 Al+Ti-.85-1.2 C-.06-.10
ALLOY 800HT BAR B408 A800HT N08811 Ni-30-35 Cr-19-23 Fe-39.5min Al-.15-.60 Ti-.15-.60 Al+Ti-.85-1.2 C-.06-.10
ALLOY 825 FORGING B564 A825 N08825 Ni-38-46 Cr-19.5-23.5 Mo-2.5-3.5 Fe-22min Cu-1.5-3 Al-.2max Ti-.6-1.2 C-.05
ALLOY 825 BAR B425 A825 N08825 Ni-38-46 Cr-19.5-23.5 Mo-2.5-3.5 Fe-22min Cu-1.5-3 Al-.2max Ti-.6-1.2 C-.05
C276 FORGING B564 A276 N10276 Cr-14.5-16.5 Mo-15-17 Fe-4-7 W-3-4.5 Co-2.5max V-.35max ( Nickel remnant )
C276 BAR B574 A276 N10276 Cr-14.5-16.5 Mo-15-17 Fe-4-7 W-3-4.5 Co-2.5max V-.35max ( Nickel remnant )
B-2 FORGING B335 ALLOY B-2 N10665 Cr-1max Mo-26-30 Fe-2max Co-1max
B-2 BAR B335 ALLOY B-2 N10665 Cr-1max Mo-26-30 Fe-2max Co-1max
C-22 ® FORGING B564 AC22 N06022 Cr-20-22.5 Mo-12.5-14.5 Fe-2-6 W-2.5-3.5 Co-2.5max V-.35max ( Nickel remnant )
C-22 ® BAR B574 AC22 N06022 Cr-20-22.5 Mo-12.5-14.5 Fe-2-6 W-2.5-3.5 Co-2.5max V-.35max ( nickel remnant )


Chrome Moly Material Grade Composition Chart
NAME ASTM# GRADE UNS # NOMINAL COMPOSITION
F5 A182 F5 K41545 C-.15max Mn-.30-.60 Cr-4.0-6.0 Mo-.44-.65
F5a A182 F5A K42544 C-.25max Mn-.60 Cr-4.0-6.0 Mo-.44-.65
F9 A182 F9 K90941 C-.15max Mn-.30-.60 Cr-8.0-10.0 Mo-.90-1.10
F11 A182 F11 K11572 C-.10-.20 Mn-.30-.80 Cr-1.0-1.5 Mo-.44-.65
F22 A182 F22 K21590 C-.05-.15 Mn-.30-.60 Cr-2.0-2.5 Mo-.87-1.13
F91 A182 F91 K91560 C-.08-.12 Mn-.30-.60 Cr-8-9.5 Mo-.85-1.05 Cb-.06-.10 N-.03-.07 Al-.04max V-.18-.25


Titanium Material Grade Composition Chart
NAME ASTM# GRADE NOMINAL COMPOSITION
GRADE 1 B348 # 1 Fe-.30max O-.25max C-.08max N-.03max H-.015max
GRADE 1 B381 F-1 Fe-.30max O-.25max C-.08max N-.03max H-.015max
GRADE 2 B348 # 2 Fe-.30max O-.25max C-.08max N-.03max H-.015max
GRADE 2 B381 F-2 Fe-.30max O-.25max C-.08max N-.03max H-.015max
GRADE 3 B348 # 3 Fe-.30max O-.25max C-.08max N-.03max H-.015max
GRADE 3 B381 F-3 Fe-.30max O-.25max C-.08max N-.03max H-.015max
GRADE 4 B348 # 4 Fe-.30max O-.25max C-.08max N-.03max H-.015max
GRADE 4 B381 F-4 Fe-.30max O-.25max C-.08max N-.03max H-.015max

Note: Various grades of Titanium, such as Grade 3 or higher, can be supplied other than shown above.
Forged Titanium products or Titanium Bar can also be supplied.



Aluminum Material Grade Composition Chart
NAME ASTM# GRADE UNS # NOMINAL COMPOSITION
5083 FORGING B-221 5083 A95083 Mg-4-4.9 Mn-.4-1 Si-.40max Fe-.40max Cu-.10max Cr-.05-.25 Zn-.25max Ti-.15max
5083 BAR B-247 5083 A95083 Mg-4-4.9 Mn-.4-1 Si-.40max Fe-.40max Cu-.10max Cr-.05-.25 Zn-.25max Ti-.15max
5086 B-221 5086 A95086 Mg-3.5-4.5 Mn-.2-.7 Si-.40max Fe-.50max Cu-.10max Cr-.05-.25 Zn-.25max Ti-.15max
6061 FORGING B-221 6061 A96061 Mg-.8-1.2 Mn-.15max Si-.4-.8 Fe-.70max Cu-.15-.40 Cr-.04-.35 Zn-.25max Ti-.15max
6061 BAR B-247 6061 A96061 Mg-.8-1.2 Mn-.15max Si-.4-.8 Fe-.70max Cu-.15-.40 Cr-.04-.35 Zn-.25max Ti-.15max


Copper Nickel Material Grade Composition Chart
NAME MIL/ASTM# GRADE UNS # NOMINAL COMPOSITION
CU-NI 70/30 15726* B151 70-30 C71500 Cu-65min Ni-29-33 Mn-1.0max Fe-.4-1 Zn-.5max
CU-NI 90/10 15726* B151 90-10 C70600 Cu-86.5min Ni-9-11 Mn-1.0max Fe-1-1.8 Zn-.5max
* Material is supplied as MIL-C-24679 for forged shapes.