ASTM A564 Specification

This specification2 covers bars and shapes of agehardening stainless steels. Hot-finished or cold-finished rounds, squares, hexagons, bar shapes, angles, tees, and channels are included; these shapes may be produced by hot rolling, extruding, or forging. Billets or bars for reforging may be purchased to this specification.

Chemical Composition

UNS Designation Type Carbon Manganese Phosphorus Sulfur Silicon Chromium Nickel Aluminum Molybdenum Titanium Copper Other Elements
S17400 630 0.07 1.00 0.040 0.030 1.00 15.00-17.50 3.00-5.00 ... ... ... 3.00-5.00 C
S17700 631 0.09 1.00 0.040 0.030 1.00 16.00-18.00 6.50-7.75 0.75-1.50 ... ... ... ...
S15700 632 0.09 1.00 0.040 0.030 1.00 14.00-16.00 6.50-7.75 0.75-1.50 2.00-3.00 ... ... ...
S35500 634 0.10-0.15 0.50-1.25 0.040 0.030 0.50 15.00-16.00 4.00-5.00 ... 2.50-3.25 ... ... D
S17600 635 0.08 1.00 0.040 0.030 1.00 16.00-17.50 6.00-7.50 0.40 ... 0.40-1.20 ... ...
S15500 XM-12 0.07 1.00 0.040 0.030 1.00 14.00-15.50 3.50-5.50 ... ... ... 2.50-4.50 C
S13800 XM-13 0.05 0.20 0.010 0.008 0.10 12.25-13.25 7.50-S.50 0.90-1.35 2.00-2.50 ... ... E
S45500 XM-16 0.03 0.50 0.015 0.015 0.50 11.00-12.50 7.50-9.50 ... 0.50 0.90-1.40 1.50-2.50 F
S45503 0.010 0.50 0.010 0.010 0.20 11.00-12.50 7.50-9.50 ... 0.50 1.00-1.35 1.50-2.50 F
S45000 XM-25 0.05 1.00 0.030 0.030 1.00 14.00-16.00 5.00-7.00 ... 0.50-1.00 ... 1.25-1.75 G
S46500 0.02 0.25 0.015 0.010 0.25 11.00-12.50 10.75-11.25 ... 0.76-1.25 1.50-1.80 ... E
S46910 0.030 1.00 0.030 0.015 0.70 11.0-13.0 8.0-10.0 0.15-0.50 3.0-5.0 0.50-1.20 1.5-3.5 ...
S10120 0.02 0.25 0.015 0.010 0.25 11.00-12.50 9.00-10.50 0.80-1.10 1.75-2.25 0.20-0.50 ... E
S11100 0.02 0.25 0.015 0.010 0.25 11.00-12.50 10.25-11.25 1.35-1.75 1.75-2.25 0.20-0.50 ... E
Note:

A. Limits are in percent maximum unless shown as a range or stated otherwise.
B. New designation established in accordance with Practice E527 and SAE J1086.
C. Columbium plus tantalum 0.15–0.45.
D. Nitrogen 0.07–0.13.
E. Nitrogen 0.01.
F. Columbium plus tantalum 0.10–0.50.
G. Columbium 8 times carbon minimum.

Mechanical Properties

Type Condition Suggested Hardening or Aging Treatment, or BothB,C,D Applicable Thickness, in. and Test DirectionE Tensile Strength, min Yield Strength, minF Elongation in 2 in. [50 mm] or 4D, min. % Reduction of area, min, % HardnessG Impact Charpy-V, min
Temperature, °F [°C] Time, h QuenchH ksi [MPa] ksi [MPa] Rockwell C, min Brinell, min ft·lbf J
630 H900 900 (480] 1.0 air cool Up to 3 in. incl [75   mm] (L) 40  
          Over 3 in. [75 mm] to 8 in. incl [200mm]  (T) 190 [1310] 170 [1170] 10 35 40 388 ... ...
  H925 925 (495) 4.0 air cool Up to 3 min. incl   [ 75 mm] ( L)     44 
   Over 3 in. [75 mm] to 8 in. incl [200mm] (T)  170 [1170] 155 [1070] 10 38 38 375 5 6.8
  H1025 1025 [550] 4.0 air cool Up to 8 in. incl [200 mm] (L) 155 [1070] 145 [1000] 12 45 35 331 15 20
  H1075 1075 [580] 145 [1000] 125 [860] 13 45 32 311 20 27
  H1100 1100 [595] 140 [965] 115 [795] 14 45 31 302 25 34
  H1150 1150 [620] 135 [930] 105 [725] 16 50 28 277 30 41
  H1150M 1400 [760] for 2 h air cool plus   115 [795] 75 [520] 18 55 24 255 55 75
  1150 [620] for 4 h air cool                  
  H1150D 1150 [620] for 4 h air cool plus   125 [860] 105 [725] 16 50 24 255 30 41
  1150 [620] for 4 h air cool           33 max 311 max    
631 RH950 1750°F [955°C] for not less than 10 min, but not more than 1 h, cool rapidly to room temperature.   Up to 4 in. incl. [100 mm] (L) 185 [1280] . 150 [1030] 6 10 41 388 ... ...
  10°F [75°C], hold not less than 8 h. Warm in air to room temperature. Heat to 950°F [510°C], hold 1 h, air cool.                    
  TH1050 Alternative treatment: 1400°F [760°C] hold 90 min, cool to 55 ± 5°F [15 ± 3°C] within 1 h. Hold not less than 30 min, heat to 1050°F [565°C] hold for 90 min, air cool.   Up to 6 in. incl [150 mm] (L) 170 [1170] 140 [965] 6 25 38 352 ... ...
632 RH950 Same as Type 631   Up to 4 in. incl [100 mm] (L) 200 [1380] 175 [1210] 7 25 ... 415 ... ...
  TH1050   Up to 6 in. incl [150 mm] (L) 180 [1240] 160 [1100] 8 25 ... 375 ... ...
634I H1000 1750 [955] for not less than 10 min, but not more than 1 h. Water quench. Cool to not higher than minus 100°F [75°C]. Hold for not less than 3 h. Temper at 1000°F [540°C], holding for not less than 3 h.     170 [1170] 155 [1070] 12 25 37 341 ... ...
635 H950 950 (510) 0.5 air cool   190 [1310] 170 [1170] 8 25 39 363 ... ...
  H1000 1000 [540]     180 [1240] 160 [1100] 8 30 37 352 ... ...
  H1050 1050 [565]     170 [1170] 150 [1035] 10 40 35 331 ... ...
XM-12 H900 900 [480] 1.0 air cool Up to 12 in. incl [300 mm] (L) 190 [1310] 170 [1170] 10 35 40 388 ... ...
    Up to 12 in. incl [300 mm] (T)     6 15        
  H925 925 [495] 4.0 air cool Up to 12 in. incl [300 mm] (L) 170 [1170] 155 [1070] 10 38 38 375 5 6.8
    Up to 12 in. incl [300 mm] (T)     7 20        
  H1025 1025 [550] 4.0 air cool Up to 12 in. incl [300 mm] (L) 155 [1070] 145 [1000] 12 45 35 331 15 20
    Up to 12 in. incl [300 mm] (T)     8 27     10 14
  H1075 1075 [580] 4.0 air cool Up to 12 in. incl [300 mm] (L) 145 [1000] 125 [860] 13 45 32 311 20 27
    Up to 12 in. incl [300 mm] (T)     9 28     15 20
  H1100 1100 [595] 4.0 air cool Up to 12 in. incl [300 mm] (L) 140 [965] 115 [795] 14 45 31 302 25 34
    Up to 12 in. incl [300 mm] (T)     10 29     15 20
  H1150 1150 [620] 4.0 air cool Up to 12 in. incl [300 mm] (L) 135 [930] 105 [725] 16 50 28 277 30 41
    Up to 12 in. incl [300 mm] (T)     11 30     20 27
  H1150M 1400 [760] for 2 h air cool plus Up to 12 in. incl [300 mm] (L) 115 [795] 75 [515] 18 55 24 255 55 75
  1150 [620] for 4 h air cool Up to 12 in. incl [300 mm] (T)     14 35     35 47
XM-13 H950 950 [510] 4.0 air cool Up to 12 in. incl [300 mm] (L) 220 [1515] 205 [1415] 10 45 45 430 ... ...
    Up to 12 in. incl [300 mm] (T)         35      
  H1000 1000 [540] 4.0 air cool Up to 12 in. incl [300 mm] (L) 205 [1415] 190 [1310] 10 50 43 400 ... ...
    Up to 12 in. incl [300 mm] (T)     10 40        
  H1025 1025 [550] 4.0 air cool Up to 12 in. incl [300 mm] (L) 185 [1280] 175 [1210] 11 50 41 380 ... ...
    Up to 12 in. incl [300 mm] (T)       45        
  H1050 1050 [565] 4.0 air cool Up to 12 in. incl [300 mm] (L) 175 [1210] 165 [1140] 12 50 40 372 ... ...
    Up to 12 in. incl [300 mm] (T)       45        
  H1100 1100 [595] 4.0 air cool Up to 12 in. incl [300 mm] (L) 150 [1035] 135 [930] 14 50 34 313 ... ...
    Up to 12 in. incl [300 mm] (T)       50        
  H1150 1150 [620] 4.0 air cool Up to 12 in. incl [300 mm] (L) 135 [930] 90 [620] 14 50 30 283 ... ...
    Up to 12 in. incl [300 mm] (T)       50        
  H1150M M 1400 [760] for 2 h, air cool plus Up to 12 in. incl [300 mm] (L) 125 [860] 85 [585] 16 55 26 259 ... ...
  1150 [620] for 4 h, air cool Up to 12 in. incl [300 mm] (T)       55        
XM-16 H900 900 [480] 4.0 air cool Up to 6 in. incl [150 mm] (L) 235 [1620] 220 [1515] 8 30 47 444 ... ...
  H950 950 [510]     220 [1515] 205 [1415] 10 40 44 415 ... ...
  H1000 1000 [540]     205 [1415] 185 [1275] 10 40 40 363 ... ...
S45503 H900 900 [480] 4.0 air cool Up to 6 in. incl [150 mm] (L) 235 [1620] 220 [1520] 8 30 47 444 ... ...
    Up to 6 in. incl [150 mm] (T)     4 15

 

 

     
  H950 950 [510] 4.0 air cool Up to 6 in. incl [150 mm] (L) 220 [1515] 205 [1410] 10 40 44 415 ... ...
    Up to 6 in. incl [150 mm] (T)     5 20        
  H1000 1000 [540] 4.0 air cool Up to 6 in. incl [150 mm] (L) 205 [1410] 185 [1275] 10 40 40 363 ... ...
    Up to 6 in. incl [150 mm] (T)     6 25        
XM-25 H900 900 [480] 4.0 air cool Up to 12 in. incl [300 mm] (L) 180 [1240] 170 [1170] 10 40 39 363 ... ...
    Up to 12 in. incl [300 mm] (T)     6 20        
  H950 950 [510] 4.0 air cool Up to 12 in. incl [300 mm] (L) 170 [1170] 160 [1100] 10 40 37 341 ... ...
    Up to 12 in. incl [300 mm] (T)     7 22        
  H1000 1000 [540] 4.0 air cool Up to 12 in. incl [300 mm] (L) 160 [1100] 150 [1035] 12 45 36 331 ... ...
    Up to 12 in. incl [300 mm] (T)     8 27        
  H1025 1025 [550] 4.0 air cool Up to 8 in. incl [200 mm] 150 [1035] 140 [965] 12 45 34 321 ... ...
  H1050 1050 [565] 4.0 air cool Up to 12 in. incl [300 mm] (L) 145 [1000] 135 [930] 12 45 34 321 ... ...
    Up to 12 in. incl [300 mm] (T)     9 30        
  H1100 1100 [595] 4.0 air cool Up to 12 in. incl [300 mm] (L) 130 [895] 105 [725] 16 50 30 285 ... ...
    Up to 12 in. incl [300 mm] (T)     11 30        
  H1150 1150 [620] 4.0 air cool Up to 12 in. incl [300 mm] (L) 125 [860] 75 [515] 18 55 26 262 ... ...
    Up to 12 in. incl [300 mm] (T)     12 35        
S46500 H950 950 [510] 4.0 air cool Up to 12 in. incl [300 mm] (L) 240 [1655] 220 [1515] 10 45 47 444 ... ...
    Up to 12 in. incl [300 mm] (T)     8 35        
  H1000 1000 [540] 4.0 air cool Up to 12 in. incl [300 mm] (L) 220 [1515] 200 [1380] 10 50 45 430 ... ...
    Up to 12 in. incl [300 mm] (T)     10 40        
  H1025 1025 [560] 4.0 air cool Up to 12 in. incl [300 mm] (L) 210 [1450] 195 [1345] 12 50 44 415 ... ...
    Up to 12 in. incl [300 mm] (T)     11 45        
  H1050 1050 [565] 4.0 air cool Up to 12 in. incl [300 mm] (L) 200 [1380] 185 [1280] 13 50 43 400 ... ...
    Up to 12 in. incl [300 mm] (T)     12 45        
UNS S46910 CW 1⁄2 hard + aging 890 [475] 1.0 Air cool . . . 245 [1690] 218 [1500] 6 ... 48 456 ... ...
  CW full hard + aging 890 [475] 1.0 Air cool . . . 320 [2205] 290 [2005] 2 . . . 55 561 ... ...
S10120 H950 950 [510] 4.0 air cool Up to 12 in. incl [300 mm] (L) 203 [1400] 189 [1300] 10 50 43 401 ... ...
    Up to 12 in. incl [300 mm] (T)       9 45      
S11100 H900 900 [480] J air or oil or water Up to 12 in. incl [300 mm] (L) 247 [1700] 231 [1590] 11 43 47 448 ... ...
  H950 950 [510] 8.0 air or oil or water Up to 12 in. incl [300 mm] (L) 240 [1655] 220 [1517] 10 45 47 448 ... ...
    Up to 12 in. incl [300 mm] (T)     8 35        
  H1000 1000 [540] 8.0 air or oil or water Up to 12 in. incl [300 mm] (L) 220 [1517] 200 [1378] 10 50 45 426 ... ...
    Up to 12 in. incl [300 mm] (T)     10 40        
Note:

B. Time refers to minimum time material is at temperature and may be extended to obtain required ductility properties.
C. Unless otherwise noted, temperatures shown are suggested temperatures and may be varied to obtain required tensile properties.
D. Intermediate temperatures must meet the ductility requirements of the next highest suggested hardening or aging temperature, or both. Example: Type 630 at 1050°F [565°C] must have 13 % elongation and 45 % reduction, same as for age hardening at 1075°F [580°C].
E. (L) - Longitudinal axis of specimen parallel to direction of grain flow during rolling or forging. (T) - Transverse axis of specimen perpendicular to direction of grain flow during rolling or forging.
G. Either Rockwell C hardness or Brinell is permissible. On sizes 1⁄2 in. (12.70 mm) and smaller, Rockwell C is preferred.
H. When air cooling is specified, gases other than air may be used.
I. for details on equalize and over temper heat treatment.
J. For the H900 condition of S11100, the duration set up between 4 and 8 hours.