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15-7PH / TYPE 632 / UNS S15700 / W.NR. 1.453215-7PH / TYPE 632 / UNS S15700 / W.NR. 1.4532
SPECIFICATIONS
Form
ASTM
Rod and bar
A 564, A 484
Plate, sheet and strip
A 693, A 480
Forging
A 705, A 484
PHYSICAL PROPERTIES
Density
Melting Range
g/cm3
°C
7.81
1415-1450
CHEMICAL COMPOSITION
%
C
Mn
P
S
Ni
Cr
Mo
Si
MIN
-
-
-
-
6.5
14
0.75
-
MAX
0.09
1
0.04
0.03
7.75
16
1.5
1
FEATURES
15-7PH is a semi-austenitic precipitation hardening stainless steel that provides high strength and hardness and good corrosion resistance. Its general corrosion resistance level in conditions TH 1050 and RH 950 is superior to standard hardenable chromium types 400 series stainless steels, but is not as good as chromium-Alloy type 304.
APPLICATIONS
Diaphragms, welded and brazed honeycomb panels, aircraft bulkheads, springs, and retaining rings.
Mechanical Properties
Heat Treatment
Tensile Test
Hardness Index
Code
Tensile Strength
(Mpa)
Yield Strength
(Mpa)
Elongation
(%)
Area Reduction
(%)
HB
（Brinell）
HRC
（Lorsch）
Solutionizing
1030
MAX
380
MAX
20
MIN
-
229
MAX
-
Conditions: 1000-1100°C Oil cooling
565°C Ageing
140
MIN
960
MIN
5
MIN
25
MIN
363
MIN
37
MIN
Conditions: After solution treatment, it was kept at (760±15) °C for 90min, cooled to below 15°C within 1h, kept for 30min, and then heated to (565±10) °C for 90min air cooling
510°C Ageing
1230
MIN
1030
MIN
4
MIN
10
MIN
388
MIN
40
MIN
Conditions: After solution treatment, it was kept at (955±15) °C for 10min, air-cooled to room temperature, cooled to - (73±6) °C within 24h, kept for 8h, and then heated to (510±10) °C , kept for 60min of air-cooling
Application: Precipitation shaped steel with added aluminum. Used as springs, hot rings, meter parts, etc.
Note: According to customer requirements, we can produce standard: GB/1220-07, JIS G4303, EN 10088-05.....at the same time.
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17-7PH / TYPE 631/ UNS S17700 / W.NR. 1.456817-7PH / TYPE 631/ UNS S17700 / W.NR. 1.4568
SPECIFICATIONS
Form
ASTM
Rod and bar
A 564, A 484
Plate, sheet and strip
A 693, A 480
Forging
A 705, A 484
PHYSICAL PROPERTIES
Density
Melting Range
g/cm3
°C
7.81
1404-1440
CHEMICAL COMPOSITION
%
C
Mn
P
S
Ni
Cr
Si
Al
MIN
-
-
-
-
6.5
16
-
0.75
MAX
0.09
1
0.04
0.04
7.75
18
1
1.5
FEATURES
17-7PH is a precipitation hardening martensitic stainless steel that combines high strength and hardness with good corrosion resistance. Its corrosion resistance in conditions TH 1050 and RH 950 is generally superior to standard hardenable chromium types 400 series stainless steels, but is not as good as chromium-Alloy type 304. Corrosion resistance in condition CH 900 is similar to type 304 in most environments. Like other martensitic steels, it is subject to cracking when exposed under stress in environments containing hydrogen sulfide. Such applications should be avoided.
APPLICATIONS
Aerospace industry, chemical and food processing equipment, petroleum refining equipment, and general metalworking.
Mechanical Properties
Heat Treatment
Tensile Test
Hardness Index
Code
Tensile Strength
(Mpa)
Yield Strength
(Mpa)
Elongation
(%)
Area Reduction
(%)
HB
（Brinell）
HRC
（Lorsch）
Solutionizing
-
-
-
-
269
MAX
26
MAX
Conditions:1000-1100°C Oil cooling
565°C Ageing
1210
MIN
1100
MIN
7
MIN
25
MIN
375
MIN
42
MIN
Conditions: After solution treatment, it was kept at (760±15) °C for 90min, cooled to below 15°C within 1h, kept for 30min, and then heated to (565±10) °C, kept for 90min of air cooling
510°C Ageing
1320
MIN
1210
MIN
6
MIN
20
MIN
388
MIN
44
MIN
Conditions: After solution treatment, it was kept at (955±15) °C for 10min, air-cooled to room temperature, then cooled to - (73±6) °C within 24h, kept for 8h, and then heated to (510±10) °C, kept for 60min of air-cooling
Application: Used for high strength containers, parts and structural parts with certain corrosion resistance requirements.
Note: According to customer requirements, we can produce standard: GB/1220-07, JIS G4303, EN 10088-05.....at the same time.
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17-4PH / TYPE 630/ UNS S17400 / W.NR. 1.454217-4PH / TYPE 630/ UNS S17400 / W.NR. 1.4542
SPECIFICATIONS
Form
ASTM
Rod and bar
A 564, A 484
Plate, sheet and strip
A 693, A 480
Forging
A 705, A 484
PHYSICAL PROPERTIES
Density
Melting Range
g/cm3
°C
7.75
1404-1440
CHEMICAL COMPOSITION
%
C
Mn
P
S
Ni
Cr
Nb
Cu
Si
MIN
-
-
-
-
3
15
0.15
3
-
MAX
0.07
1
0.04
0.03
5
17.5
0.45
5
1
FEATURES
17-4PH is a chromium-Alloy-copper precipitation hardening martensitic stainless steel that combines oxidation and corrosion resistance comparable to 304 in most environments with high strength and hardness. It is the most widely used of all the precipitation hardening stainless steels, and is more cost effective than many high Alloy non-ferrous alloys in some applications. 17-4PH cannot be used at temperatures above 300°C and at cryogenic temperatures. It is magnetic.
APPLICATIONS
Aerospace industry, biomedical hand tools, chemical and food processing equipment, nuclear waste processing and storage, general metalworking, and paper mill equipment.
Mechanical Properties
Heat Treatment
Tensile Test
Hardness Index
Code
Tensile Strength
(Mpa)
Yield Strength
(Mpa)
Elongation
(%)
Area Reduction
(%)
HB
（Brinell）
HRC
（Lorsch）
Solutionizing
-
-
-
-
363
MAX
38
MAX
Conditions: 1020-1060°C Oil cooling
H900
1310
MIN
1180
MIN
10
MIN
40
MIN
375
MIN
40
MIN
Conditions: After solution treatment, air cooling at 470-490°C
H1025
1060
MIN
1000
MIN
12
MIN
45
MIN
331
MIN
35
MIN
Conditions: After solution treatment, air cooling at 540-560°C
H1075
1000
MIN
865
MIN
13
MIN
45
MIN
302
MIN
31
MIN
Conditions: After solution treatment, air cooling at 570-590°C
H1150
930
MIN
725
MIN
16
MIN
50
MIN
277
MIN
28
MIN
Conditions: After solution treatment, air cooling at 610-630°C
Annealing
Heat up to 850°C, hold for 2~3h (according to the effective thickness of the workpiece and other factors to determine the holding time), keep at 20°C/h cooling, when drop to 600°C, then with the furnace cooling to 300°C, remove the workpiece and then air cooling.
Application: Precipitation hardening steel with added copper.
Used as shaft, turbine components, etc.
Note: According to customer requirements, we can produce standard: GB/1220-07, JIS G4303, EN 10088-05.....at the same time.
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254SMO / UNS S31254 / W. NR. 1.4547254SMO / UNS S31254 / W. NR. 1.4547
EXECUTIVE STANDARD：ASTM A182
PHYSICAL PROPERTIES
Density
Melting Range
g/cm3
°C
8.24
1320-1390
THE MINIMUM MECHANICAL PROPERTIES AT NORMAL TEMPERATUREAlloy and State
Tensile Strength
Yield Strength
Rate of Elongation
Brinell Hardness
Rm N/mm2
RP0.2N/mm2
A5%
HB
Sheet and Steel Strip
690
310
35
≤223
Plate
655
310
35
≤223
CHEMICAL COMPOSITION
%
C
Cr
Ni
Mo
Si
Mn
P
S
Cu
N
Fe
MIN
-
19.5
17.5
6
-
-
-
-
0.5
0.18
Balance
MAX
0.02
20.5
18.5
6.5
0.8
1
0.03
0.01
1
0.22
FEATURES
S31254 is a high performance austenitic stainless steel. Its high alloying elements content imparts excellent resistance to uniform, pitting and crevice corrosion, and stress corrosion cracking. It was originally developed to withstand the corrosion of acids, especially in the presence of halide ions, such as hydrochloric acid, hydrofluoric acid, phosphoric acid, and sulphuric acid contaminated with chlorides. In certain environments it is an alternative to more expensive Alloy alloys and titanium alloys.
APPLICATIONS
Chemical processing equipment, pulp and paper industry bleaching equipment, desalination plant seawater piping, food and beverage industry, pharmaceuticals, and hydrometallurgy.
MAIN FORM
PRECIPITATION HARDENING STEEL
