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Steel Grades

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Mechanical Requirements

ALLOY AND STAINLESS STEEL ASTM A 193 for HIGH TEMPERATURE SERVICE
ALLOY ASTM AISI UNS Dia Tensile Strenght min,MPa Yield Strenght0,2% MPa Elongation in 4D,min,% Reduction of Areamin,% HB
B5 A193 501 S50100 up to 4″, incl 690 550 16 50 –
B6 A193 410 S41000 up to 4″, incl 760 585 15 50 –
B7 A193 4140 S41400 21/2 and under 860 720 16 50 321
over 21/2 to 4″ 765 655 16 50 302
over 4″ to 7″ 690 515 18 50 277
B7M A193 4140 G41400 21/2 and under 690 550 18 50 235
over 21/2 to 4″ 690 550 18 50 235
over 4″ to 7″ 690 515 18 50 235
B16 A193 – K14072 21/2 and under 860 725 18 50 321
over 21/2 to 4″ 790 655 17 45 302
over 4″ to 7″ 690 585 16 45 277
B8 A193 304 S30400 all size 515 205 30 50 223
B8A A193 304 S30400 all size 515 205 30 50 192
B8T A193 321 S32100 all size 515 205 30 50 223
B8TA A193 321 S32100 all size 515 205 30 50 192
B8C A193 347 S34700 all size 515 205 30 50 223
B8CA A193 347 S34700 all size 515 205 30 50 192
B8M A193 316 S31600 all size 515 205 30 50 223
B8MA A193 316 S31600 all size 515 205 30 50 192
B8R A193 S20910 all size 690 380 35 55 271
B8S A193 S21800 all sizes 655 345 35 55 271
B8MLCuN A193 S31254 all sizes 660 240 30 40 223
B8cl2 A193 304 S30400 3/4 and under 860 690 12 35 321
B8Tcl2 A193 321 S32100 over 3/4 to 1 795 550 15 35 321
B8Ccl2 A193 347 S34700 over 1 to 11/4 725 450 20 35 321
over 11/4 to 11/2 690 345 28 45 321
B8Mcl2 A193 316 S31600 3/4 and under 760 655 15 45 321
B8MLCuNcl2 A193 S31254 over 3/4 to 1 690 550 20 45 321
over 1 to 11/4 655 450 25 45 321
over 11/4 to 11/2 620 345 30 45 321
B8M2cl2B A193 316 S31600 2 and under 655 515 25 40 321
over 2 to 21/2 620 450 30 40 321
B8cl2B A193 304 S30400 over 21/2 to 3 550 380 30 40 321
B8M3cl2C A193 316 S31600 2 and under 585 450 30 60 321
over 2 585 415 30 60 321

 

Mechanical Requirements

ALLOY AND STAINLESS STEEL ASTM A 320 for LOW TEMPERATURE SERVICE
ALLOY ASTM AISI UNS Dia Tensile Strenght min. MPa Yield Strenght min.(0,2%)MPa Elongation in 4D min.% Reduction of Area min. % HB Impact Test -101° C (min.) avg. Impact Test -73°C (min) Joules
L7 A320 4140 G4140 4” and under 860 725 16 50 235 27 (20)
L7M A320 4140 G4140 all sizes 690 550 18 50 235 27 (20)
L43 A320 4340 G4340 over 21/2 860 725 16 50 235 27 (20)
B8 A320 304 S30400 all size 515 205 35 50 223 – –
B8A A320 304 S30400 all size 515 205 35 50 192 – –
B8T A320 321 S32100 all size 515 205 35 50 123 – –
B8TA A320 321 S32100 all size 515 205 35 50 192 – –
B8C A320 347 S34700 all size 515 205 35 50 223 – –
B8CA A320 347 S34700 all size 515 205 35 50 192 – –
B8M A320 316 S31600 all size 515 205 35 50 223 – –
B8MA A320 316 S31600 all size 515 205 35 50 192 – –
B8cl2 A320 304 S30400 3/4 and under 860 690 12 35 321 – –
B8Tcl2 A320 321 S32100 over 3/4 to 1″ 725 450 20 35 321 – –
B8Ccl2 A320 347 S34700 >over 1″ to 11/4 795 550 15 35 321 – –
over 11/4 to 11/2 690 345 28 45 321 – –
B8Mcl2 A320 316 S31600 3/4 and under 760 655 15 45 321 – –
over 3/4 to 1″ 690 550 20 45 321 – –
over 1″ to 11/4 655 450 25 45 321 – –
over 11/4 to 11/2 620 345 30 45 321 – –

 

 

CHEMICAL REQUIREMENTS ASTM A193 – A320(Composition percent)
ASTM Cmax Mnmax Pmax Smax Simax Cr Ni Mo V Ti N Othermax
B5 0,10 min 1,00 0,040 0,030 1,00 4,00-6,00 – 0,40-0,65 – – – –
B6 0,15 min 1,00 0,040 0,030 1,00 11,5-13,5 – – – – – –
B7-B7M 0,37-0,49 0,65-1,10 0,035 0,040 0,15-0,35 0,75-1,20 – 0,15-0,25 – – – –
B16 0,36-0,47 0,45-0,70 0,035 0,040 0,15-0,35 0,80-1,15 – 0,50-0,65 0,25-0,35 – – Al 0,015
L7-L7M 0,38-0,48 0,75-1,00 0,035 0,040 0,15-0,35 0,80-1,10 – 0,15-0,25 – – – –
L43 0,38-0,43 0,60-0,85 0,035 0,040 0,15-0,35 0,70-0,90 1,65-2,0 2,0-3,0 – – – –
B8 0,08 2,00 0,045 0,030 1,00 18,0-20,0 8,0-11,0 – – – – –
B8A 0,08 2,00 0,045 0,030 1,00 18,0-20,0 8,0-11,0 – – – – –
B8C 0,08 2,00 0,045 0,030 1,00 17,0-19,0 9,0-12,0 – – – – Cb+Ta 10xC 0,05
under content min; 1,1
B8CA 0,08 2,00 0,045 0,030 1,00 17,0-19,0 9,0-12,0 – – – – –
B8M 0,08 2,00 0,045 0,030 1,00 16,0-18,0 10,0-14,0 2,0-3,0 – – – –
B8MA 0,08 2,00 0,045 0,030 1,00 16,0-18,0 10,0-14,0 2,0-3,0 – – – –
B8MLCuN 0,02 1,00 0,030 0,010 0,80 19,5-20,5 17,5-18,5 6,0-6,5 – 0,18-0,22 Cu 0,5-1,0
B8R 0,06 4,0-6,0 0,045 0,030 1,00 20,5-23,5 11,5-13,5 1,5-3,0 0,1-0,3 5xC min 0,20-0,40 Cb+Nb 0,1-0,3
B8S 0,10 7,0-9,0 0,060 0,030 3,5-4,5 16,0-18,0 8,0-9,0 – – 0,08-0,18 –
B8T 0,08 2,00 0,045 0,030 1,00 17,0-19,0 9,0-12,0 – 5xC min – –
B8TA 0,08 2,00 0,045 0,030 1,00 17,0-19,0 9,0-12,0 – 5xC min 5xC min – –
B8cl2 0,08 2,00 0,045 0,030 1,00 18,0-20,0 8,0-11,0 – – – – –
B8Ccl2 0,08 2,00 0,045 0,030 1,00 17,0-19,0 9,0-12,0 – – – – Cb+Ta 10xC 0,05-
under content min; 1,1
B8Mcl2 0,08 2,00 0,045 0,030 1,00 16,0-18,0 10,0-14,0 2,0-3,0 – – – –
B8Tcl2 0,08 2,00 0,045 0,030 1,00 17,0-19,0 9,0-12,0 – 5xC min 5xC min – –
B8MLCuNcl2 0,02 1,00 0,030 0,010 0,80 19,5-20,5 17,5-18,5 6,0-6,5 – 0,18-0,22 Cu 0,5-1,0

 

Mechanical Requirements

CARBON, ALLOY AND STAINLESS STEEL NUTS ASTM A 194
ALLOY ASTM AISI UNS Dia HB HRC HRB
2 A 194 1040 K04002 all size 159 to 327 – –
2H A 194 1040 K04002 11/2 and under 248 to 327 24 to 28 –
over 11/2 212 to 327 38 max 95 min
2HM A 194 1040 K04002 all size 159 to 237 22 max –
4L A 194 – K14510 all size 248 to 327 24 to 38 –
3 A 194 501 S50100 all size 248 to 327 24 to 38 –
6 – 6F A 194 410 S41000 all size 228 to 271 20 to 28 –
7L A 194 4140 G41400 all size 248 to 327 24 to 38 –
7M A 194 4140 G41400 all size 159 to 237 22 max –
8 A 194 304 S30400 all size 126 to 300 – 60 to 105
8C A 194 347 S34700 all size 126 to 300 – 60 to 105
8M A 194 316 S31600 all size 126 to 300 – 60 to 105
8T A 194 321 S32100 all size 126 to 300 – 60 to 105
8A A 194 304 S30400 all size 126 to 192 – 60 to 90
8CA A 194 347 S34700 all size 126 to 192 – 60 to 90
8MA A 194 316 S31600 all size 126 to 192 – 60 to 90
8TA A 194 321 S32100 all size 126 to 192 – 60 to 90

 

CHEMICAL REQUIREMENTS ASTM A 194(Composition percent)
ASTM C max Mnmax Pmax Smax Simax Cr Ni Mo V Ti Almax Cb+Ta
2-2H 0,40 min 1,00 0,04 0,05 0,40 – – – – – – –
2HM 0,40 min 1,00 0,04 0,05 0,40 – – – – – – –
3 0,10 min 1,00 0,04 0,03 1,00 4,0 – 6,0 – 0,40-0,65 – – – –
4L 0,40-0,50 0,70-0,90 0,035 0,04 0,15-0,35 – – 0,20-0,30 – – – –
6 0,15 max 1,00 0,04 0,03 1,00 11,5-13,5 – – – – – –
6F 0,15 max 1,25 0,06 0,15 1,00 12,0-14,0 – – – – – –
7L-7ML 0,37-0,49 0,65-1,10 0,04 0,04 0,15-0,35 0,75-1,20 – 0,15-0,25 – – – –
16 0,36-0,47 0,45-0,70 0,04 0,04 0,15-0,35 0,80-1,15 – 0,50-0,65 0,25-0,35 – 0,015 –
8-8A 0,08 max 2,00 0,05 0,03 1,00 18,0-20,0 8,0-10,50 – – – – –
8C-8CA 0,08 max 2,00 0,05 0,03 1,00 17,0-19,0 9,0-12,0 – – – – Cb+Ta 10xC 0,05
under content min; 1,1
8M-8MA 0,08 max 2,00 0,05 0,03 1,00 16,0-18,0 10,0-14,0 2,0-3,0 – – – –
8T-8TA 0,08 max 2,00 0,05 0,03 1,00 17,0-19,0 9,0-12,0 – – 5xC min – –
8MLCuN 0,02 max 1,00 0,03 0,01 0,80 19,5-20,5 17,5-18,5 6,0-6,5 – – – Cu 0,5-1,0 /N 0,18-0,22
8R 0,06 max 4,0-6,0 0,045 0,03 1,00 20,5-23,5 11,5-13,5 1,5-3,0 0,1-0,3 – – Cb+Ta 0,1-0,3 /N 0,20-0,40
8S 0,1 max 7,0-9,0 0,06 0,03 3,5-4,5 16,0-18,0 8,0-9,0 – – – – N 0,08-0,18

 

 

Mechanical Requirements

HIGH TEMPERATURE RESISTING ALLOYS
ALLOY ASTM UNS W.-Nr. HeatTratment Dia Tensile Streight min. MPa Yield Streight min. (0,2%) MPa Elongation in 4D. min. % Reduction of Area min.% HB max
600 B166 N06600 2.4816 solution annealed under 1/2 655 310 20 – –
solution annealed 1/2 to 3 620 275 25 – –
solution annealed over 3 585 240 30 – –
660A-B-C A453 S66286 1.4980 sol+prec.harden all size 895 585 15 18 248 – 341
660D A453 S66286 1.4980 sol+prec.harden all size 895 725 15 18 248 – 321
HX B572 N06002 2.4606 solution annealed all size 660 240 35 – –
** Stress Rupture Test : temperature 650°C, stress >485 MPa; time to rupture >100 hours; elong. > 5%
718 B637 N07718 2.4668 sol+prec.harden all size 1275 1034 12 15 331
718 API – N07718 2.4668 sol+prec.harden all size 1034 1000 20 25 298-363
725 B637 N07725 – sol+prec.harden all size 1034 827 20 35 43 HRC
X-750 B637 N07750 2.4669 solution annealed all size 965 620 8 – 262 min.
800H B408 N08810 1.4876 solution annealed all size 450 170 30 – –
80A B637 N07080 2.4952 solution annealed all size 930 620 20 – –
925 B637 N09925 – sol+prec.harden 5/8-3″ 965 724 18 25 38 HRC
– – – sol+prec.harden 5/8-3″ 965 758 18 25 38 HRC

 

Mechanical Requirements

CORROSION RESISTING ALLOYS
ALLOY ASTM UNS W.-Nr. Heat Tratment Dia Tensile Streight min. MPa Yield Streight min. (0,2%) MPa Elongation in 4D. min. % Reduction of Area min.% HRC max
276 F468 N10276 2.4819 solution annealed all sizes 760 310 25 – 22-32
400 F468 N04400 2.4360 solution annealed 1/4 to 7/8 550 275 20 – 75-103HRB
solution annealed 1 to 11/2 480 205 20 – 60-103HRB;
500 F468 N05500 2.4375 sol+prec.harden 1/4 to 7/8 900 620 20 – 24-37
sol+prec.harden 1 to 11/2 900 590 20 – 24-37
600 B166 N06600 2.4816 solution annealed under 1/2 655 310 20 – –
solution annealed 1/2 to 3 620 275 25 – –
solution annealed over 3 585 240 30 – –
625 G1 B446 N06625 2.4856 solution annealed up to 4 825 415 30 – –
625 G2 B446 N06625 2.4856 solution annealed all size 690 275 30 – –
660A-B-C A453 S66286 1.4980 sol+prec.harden all size 895 585 15 18 248 – 341 HB
660D A453 S66286 1,4980 sol+prec.harden all size 895 725 15 18 255 – 341 HB
686 F467-8 N06686 1.4606 solution annealed all size 1100 1030 20 – 25-49
718 B637 N07718 2.4668 sol+prec.harden all size 1275 1034 12 15 331 HB
718 API B637 N07718 2.4668 sol+prec.harden all size 1034 1000 20 25 298-363 HB
B2 B335 N10665 2.4617 solution annealed all size 760 350 40 – –
C22 B574 N06022 2.4602 solution annealed all size 690 310 45 – –

 

Mechanical Requirements

CORROSION RESISTING ALLOYS WITH HIGH YIELD LIMITS
ALLOY ASTM UNS W.-Nr. Heat Treatment Dia Tensile Strenght min. MPa Yield Strenght min.(0,2%) MPa Elongation in 4D min. % Reduction of Area min.% HB min.
F51 A182 S31803 1.4462 solution annealed all size 620 450 25 50 –
F60 A182 S32205 1.4462 solution annealed all size 655 450 25 – 290
F44 A182 S31254 1.4529 solution annealed all size 650 300 35 50 290
F53 A182 S32750 1.4468 solution annealed all size 800 550 15 – 310
F55 A A182 S32760 1.4501 solution annealed all size 750 550 25 – 290
F55 S A182 S32760 1.4501 sol. ann+cold fin all size 860 720 15 – 335
F61 A479 S32550 1.4515 solution annealed all size 760 550 15 – 297
500 F468 N05500 2.4375 sol + prec. harden 1/4 to 7/8 900 620 20 – 24-37 HRC
sol + prec. harden 1 to 11/2 900 590 20 – 24-37 HRC
660 A-B-C A453 S66286 1.4980 sol + prec. harden all size 895 585 15 18 248 – 341
660 D A453 S66286 1.4980 sol + prec. harden all size 895 725 15 18 248 – 321
31050 A182 S31050 1.4466 solution annealed all size 580 270 30 –

 

CHEMICAL REQUIREMENTS(Composition percent)
ASTM C max Mnmax Pmax Smax Simax Cr Ni Mo max Ti Al max B max N Others max
F51 0,03 2,00 0,03 0,02 1,00 21,0-23,0 4,50-6,50 2,5-3,5 – – – 0,08-0,2 –
F44 0,02 1,00 0,03 0,01 0,80 19,5-20,5 17,5-18,5 6,0-6,5 – – 0,50-1,0 0,18-0,22 –
F53 0,03 1,20 0,035 0,02 0,80 24,0-26,0 6,0-8,0 3,0-5,0 – – 0,50 0,24-0,32 –
F55 0,03 1,00 0,03 0,01 1,00 24,0-26,0 6,0-8,0 3,00-4,00 – – 0,50-1,0 0,2-0,3 W 0,5-0,1
F60 0,03 2,00 0,03 0,02 1,00 22,0-23,0 4,50-6,50 3,0-3,5 – – – 0,14-0,2 –
F61 0,04 1,50 0,04 0,03 1,00 24,0-27,0 4,50-6,50 2,9-3,9 – – 1,50-2,5 0,1-0,25 –
500 0,25 1,50 – 0,01 0,50 – 63,0-70,0 1,50 0,35-0,85 2,3-3,15 – – Cu balance Fe 2,00
660 0,08 2,00 0,04 0,03 1,00 13,5-16,0 24,0-27,0 1,00-1,50 1,90-2,35 0,35 – – V 0,1-0,5 / B 0,001-0,01
31050 0,03 2,00 0,3 0,015 0,40 24,0-26,0 21,0-23,0 2,00-3,00 – – – 0,1-0,18 –

 

 

Mechanical Requirements

CORROSION RESISTING BRONZE ALLOYS
ALLOY ASTM UNS W.-Nr. Tensile Strenght min. MPa Yield Strenght min.(0,2%) MPa Elongation in 4D min. % Reduction of Area min.% HB
614 F467/8 C61400 2.0932 520 240 30 – 122-208
630 F467/8 C63000 2.0966 690 345 5 – 166-230
655 F467/8 C65500 2.1525 345 105 20 – 105-148