►GENERAL CHARACTERISTICS OF PH GRADES 15-5PH

PCSSC-LTD 15-5 PH® Stainless Steel is a martensitic precipitation hardening stainless steel that provides an outstanding combination of high strength, good corrosion resistance, good mechanical properties at temperatures up to 600 °F (316 °C) and good toughness in both the longitudinal and transverse directions in both base metal and welds.Short-time, low-temperature heat treatments minimize distortion and scaling.This alloy is air melted and AOD refined.

►15-5PH Inventory Size Ranges

Plates / Sheets	Steel Bar	Coil / Stri

*0.08-200mm(T)WL*	*Φ8-1200mmL**	0.03-16.0xLmm

Get a quote	Get a quote	Get a quote

APPLICATIONS

This grade may be used for valve parts, fittings and fasteners, forged shafts and gears, engine parts, chemical process equipment, paper mill equipment, and components for aircraft and nuclear reactors.

FAFORGING

Stock should be uniformly heated to 2150/2200ºF (1180/1205ºC) and held for 1 hour before forging. Material should not be forged below 1850 º F (1010ºC.)
For optimum grain size and mechanical properties forged material should be air cooled to below 90ºF (32ºC) prior to further processing. Material must be solution treated before hardening.

HEAT TREATMENT

15 – 5 PH is normally supplied in the solution-treated condition, condition A. It may be hardened by heating solution-treated material to a temperature of 900ºF (480ºC) to 1150ºF (620ºC) for one to four hours, depending upon the temperature, then air cooling.

SOLUTION TREATMENT

Heat at 1900ºF (1040ºC) +/- 25ºF (14ºC) for 1/2 hr., cool to below 90ºF (32ºC) so that complete transformation to martensite takes place. Sections under 3″ (76mm) can be oil quenched, sections over 3″ (76mm) should be rapidly air cooled. Material should not be used in the solution-treated condition, due to poor toughness, poor impact strength and susceptibility to stress-corrosion cracking.

AGE/PRECIPITATION HARDENING

For condition H900, heat solution-treated material at 900ºF (480ºC) for 1 hour and air cool.
For H 925, H 1025, H 1075, H 1100, H 1150, heat solution-treated material at specified temperature +/- 15ºF (+/-8ºC) for 4 hours and air cool.
For H 1150M, for optimum machinability, heat solution-treated material at 1400ºF (760ºC) +/- 15ºF (+/- 8ºC) for 2 hours, air cool, and heat at 1150ºF (620ºC) +/- 8ºC) for 4 hours and air cool.

MACHINABILITY

This grade is readily machined in both the solution-treated and the various age-hardened conditions. When solution treated the material machines in a similar manner to types 302 and 304 stainless. Machinability improves as the hardening temperature increases. Optimum machinability is obtained from condition 1150M.

WELDABILITY

This grade may be satisfactorily welded by the shielded fusion and resistance welding processes. Oxyacetylene welding is not recommended due to the possibility of carbon pickup. Weld joints should be designed so as to minimize stresses.
Welding in the solution-treated condition is normally satisfactory, but if high welding stresses are anticipated it may be best to weld in the H1150, overaged condition. Preheating is not normally required.

►15-5PH Steel Chemical Composition

	Composition	(wt %)
C	Carbon	0.07 max.
Mn	Manganese	1.00 max.
P	Phosphorus	0.040 max.
S	Sulfur	0.030 max.
Si	Silicon	1.00 max.
Cr	Chromium	14.00 -15.50
Ni	Nickel	3.50 - 5.50
Cu	Copper	2.50 - 4.50
Nb Ta	Columbium plus Tantalum	0.15 - 0.45

*ASTM A693 requirements call for Niobium plus Tantalum (Ta) = 0.15 - 0.45.
PCSSC-LTD makes no intentional Ta addition.

Please contact us for more details. The technical data provided is for information only and not for design purposes.

Name: 15-5PH Martensitic Stainless Steel
Brand: Special Steel
Availability: InStock
Rating: 5 (1 reviews)

►15-5PH Standard Heat Treatments

As supplied from the Mill in Condition A, PCSSC-LTD 15-5 PH Stainless Steel can be heat treated at a variety of temperatures to develop a wide range of properties. Eight standard heat treatments have been developed.The following table outlines the times and temperatures required.
This alloy exhibits useful mechanical properties in Condition A. Tests conducted at an exposed marine atmosphere 82 ft. (25 m) from the waterline, show excellent stress corrosion resistance for close to 20 years. Condition A material has been used successfully in numerousapplications. The hardness and tensile properties fall within the range of those for Conditions H 1100 and H 1150.
In critical applications, the alloy is used in the precipitation-hardened condition, rather than Condition A. Heat treating to the hardened condition, especially at the higher end of the temperature range, stress relieves the structure and may provide more reliable resistance to stress corrosion cracking than in Condition A.

TABLE 1 – STANDARD HEAT TREATMENTS

Condition A Solution Treated at 1900 °F ± 25 °F (1038 °C ± 14 °C) or Air cool below 90 °F (32 °C).

Condition	Heat To ± 15 °F (8.4 °C)	Time at Temperature, hrs.	Type of Cooling
H 900	900 °F (482 °C)	1	Air
H 925	925 °F (496 °C)	4	Air
H 1025	1025 °F (551 °C)	4	Air
H 1025	1075 °F (580 °C)	4	Air
H 1100	1100 °F (593 °C)	4	Air
H 1150	1150 °F (621 °C)	4	Air
H 1150 + 1150	1150 °F (621 °C) 1150 °F (621 °C)	4 followed by 4	Air Air
H 1150-M	1400 °F (760 °C) 1400 °F (760 °C)	2 followed by 4	Air Air

PCSSC-LTD 15-5 PH Stainless Steel provides excellent mechanical properties. For applications requiring high strength and hardness plus corrosion resistance, this alloy is an outstanding choice. In addition, it is more cost effective than many high-nickel, non-ferrous alloys.

TABLE 2 – TYPICAL MECHANICAL PROPERTIES

Transverse Property	Condition
Transverse Property	A	H 900	H 925	H 1025	H 1075	H 1150	H 1150-M
UTS, ksi. (MPa)	160 (1103)	200 (1379)	190 (1310)	170 (1172)	165 (1138)	150 (1034)	137 (945)
0.2% YS, ksi. (MPa)	115 (793)	185 (1275)	175 (1207)	165 (1138)	160 (1103)	130 (896)	111 (765)
Elongation % in 2" (50.8 mm)	5	9	9	10	11	12	17
Rockwell Hardness C	35	45	43	38	37	33	31

TABLE 3 - PROPERTIES ACCEPTABLE FOR MATERIAL SPECIFICATION*

Transverse Property	Condition
Transverse Property	A	H 900	H 925	H 1025	H 1075	H 1110	H 1150
UTS, ksi. (MPa)	185 max.(1276)	190 min.(1310)	170 min.(1172)	155 min.(1069)	145 min.(1000)	140 min.(965)	135 min.(931)
0.2% YS, ksi. (MPa)	160 max.(1103)	170 min.(1172)	155 min.(1069)	145 min.(1000)	125 min.(862)	115 min.(790)	105 min.(724)
Elongation % in 2" (50.8 mm)	3 min.	5 min.	5min.	5 min.	5min.	5min.	8 min.
Rockwell Hardness C	38 max.	40 - 48	38 - 46	35 - 43	31 - 40	31 - 40	28 - 38

*Sheets and strip.

TABLE 4 - SHEET CHARPY IMPACT RESISTANCE*

Condition	Impact Energy, in.•lbs./in.2 (J/cm2)**
Condition	Room Temperature	-65 °F (-54 °C)
A	3265 (57.2)	2669 (46.7)
H 900	2857 (50.0)	2361 (41.3)
H 1025	3974 (69.6)	3378 (59.2)
H 1150	4626 (81.0)	4248 (74.4)
H 1150-M	5616 (98.4)	5049 (88.4)
Pressed Notch Tests
H 900	2184 (38.2)	1360 (23.8)
H 1150	3406 (59.6)	2557 (44.8)

*Average of triplicate tests for two heats.
**Samples were 0.093 in. (2.36 mm) thick with a depth beneath
the notch of 0.314 in. (7.98 mm).

TABLE 5 - MODULUS OF ELASTICITY

	Condition
	H 900	H 1025	H 1075	H 1150
Modulus in Tension, psi. (MPa)	28.5 x 106 (196 x 103)
Modulus in Torsion, psi. (MPa)	11.2 x 106 (77 x 103)	11.0 x 106 (76 x 103)	10.0 x 106 (69 x 103)	10.0 x 106 (69 x 103)

Data represent average of two tests from one heat.
The modulus of elasticity of PCSSC-LTD 15-5 PH Stainless Steel at elevated temperatures can be expressed conveniently as % of room temperature modulus. At temperatures ranging from room to 600 °F (315 °C), this material showed the following:

TABLE 6 - EFFECT OF TEMPERATURE ON MODULUS OF ELASTICITY

Temperature, °F (°C)	Modulus of Elasticity*, (% of Room Temperature Modulus)
72(22)	100.0
100(38)	99.6
200(93)	97.8
300 (149)	96.3
400 (204)	94.7
500 (260)	93.0
600 (315)	91.4

Poisson’s Ratio in all hardened conditions is 0.272.
*Data represent average of two tests from one heat.

Please contact us for more details. The technical data provided is for information only and not for design purposes.

TABLE 7 - PHYSICAL PROPERTIES

	Condition
	A	H 900	H 1075	H 1150
Density, lbs./in.3 (g/cm3)	0.28 (7.78)	0.282 (7.80)	0.283 (7.81)	0.284 (7.82)
Electrical Resistivity, µΩ•cm	98	97	-	-
Specific Heat,BTU/lbs./°F (kJ/kg/K) 32 – 212 °F (0 – 100 °C)	0.11(0.46)	0.10(0.42)	-	-
Thermal Conductivity, BTU/hr./ft.2/°F (W/m/K) 300 °F (149 °C) 500 °F (260 °C) 860 °F (460 °C) 900 °F (482 °C)	- - - -	124 (17.9) 135 (19.5) 156 (22.5) 157 (22.6)	- - - -	- - - -
Mean Coefficient of Thermal Expansion, in./in./°F (μm/m/K) -100 – 70 °F (-73 – 21 °C) 70 – 200 °F (21 – 93 °C) 70 – 400 °F (21 – 204 °C) 70 – 600 °F (21 – 316 °C) 70 – 800 °F (21 – 427 °C) 70 – 900 °F (21 – 482 °C)	- 6.0 x 10-6 (10.8) 6.0 x 10-6 (10.8) 6.2 x 10-6 (11.2) 6.3 x 10-6 (11.3) -	5.8 x 10-6 (10.4) 6.0 x 10-6 (10.8) 6.0 x 10-6 (10.8) 6.3 x 10-6 (11.3) 6.5 x 10-6 (11.7) -	- 6.5 x 10-6 (11.7) 6.5 x 10-6 (11.7) 6.6 x 10-6 (11.9) 6.8 x 10-6 (12.2) -	6.1 x 10-6 (11.0) 6.6 x 10-6 (11.9) 6.9 x 10-6 (12.4) 7.1 x 10-6 (12.8) 7.2 x 10-6 (13.0) 7.3 x 10-6 (13.1)

DIMENSIONAL CHANGE IN HARDENING

On hardening PCSSC-LTD 15-5 PH Stainless Steel, a dimensional change will take place. Typical dimensional changes are shown in Table 8. They can vary from heat to heat.

TABLE 8 – CONTRACTION FROM HEAT TREATMENT

Condition	Contraction, in./in. (mm/mm)
H 900	0.00045
H 925	0.00051
H 1025	0.00053
H 1100	0.0009
H 1150	0.0022
H 1150-M	1400 ––––> 0.00037 1150 ––––> 0.00206 1400 + 1150 ––––> 0.00243

Data represent single tests from one heat.

The general level of corrosion resistance of PCSSC-LTD 15-5 PH Stainless Steel exceeds that of Types 410 and 431, and is approximately equal to that of PCSSC-LTD 17-4 PH Stainless Steel.This is indicated by laboratory tests in both strongly oxidizing and reducing media, as well as by atmospheric exposures. In all heat-treated conditions, this alloy exhibits very little rusting after 500 hours exposure to 5% salt fog at 95 °F (35 °C).
When exposed to seacoast atmospheres for long periods of time,the material gradually develops a superficial layer of rust like other precipitation-hardening stainless steels. The general level of corrosion resistance is best in the fully hardened condition, and decreases slightly as the aging temperature is increased.

TABLE 9 - CORROSION RATES IN VARIOUS MEDIA

Corrosive Media	Time	Condition	Corrosion Rate
65% HNO3	Average 5 - 48 hour periods	H 900 H 1025 H 1150	0.0083 IPM*(0.210 mm) 0.0106 IPM(0.269 mm) 0.0083 IPM(0.210 mm)
1% HCI, 95 °F (35 °C)	Average 5 – 48 hour periods	H 900 H1025 H 1150	0.025 IPY**(0.635 mm) 0.085 IPY(2.159 mm) 0.730 IPY(18.542 mm)
Commercial bleach 93 °F (35 °C)	7 days	H 900 H1025 H 1150	0.0016 IPY(0.040 mm) 0.013 IPY(0.330 mm) 0.0083 IPY(0.211 mm)

*Inches per month
**Inches per year.

TABLE 10 - STRESS CORROSION CRACKING TEST RESULTS OF PCSSC-LTD 15-5 PH*

Heat	Heat Treatment	0.2% YS, ksi. (MPa)	Time to Failure, days under stress of
Heat	Heat Treatment	0.2% YS, ksi. (MPa)	100% YS	75% YS
F	Condition A	133 (917)	NF, NF, NF	NF, NF, NF
E F	H 900	180 (1241) 173 (1193)	22, 22, 22 21, 21, 21	22, 22, 22 21, 21, 28
E F	H 925	172 (1186) 166 (1145)	22(1), 22(1), 266(1) 23(1), 23(1), 23(1)	22(1), 22(1), 109(1) 23(1), 23(1), 23(1)
E F	H 975	163 (1124) 159 (1096)	NF, NF, NF NF, NF, NF	NF, NF, NF NF, NF, NF
E	H 1025	159 (1096)	NF, NF, NF	NF, NF, NF

*NF indicates no failure.
(1) Cracked at code numbers that were stamped near the ends of specimens. Materials Performance Vol.26, No. 2 (1987).

TABLE 11 – 5% SALT FOG EXPOSURE FOR 10 DAYS

Condition	Rating
H 900	A+ (0% rust and stain covered)
H 1025	A (0 – 5% rust and stain covered)
H 1150	A (0 – 5% rust and stain covered)

Product Information
Name	15-5PH Martensitic Stainless Steel
Stocklist & Inventory Available:	Blade Steel
Material Specification:	ASTM,AISI,UNS,AMS,Werkstoffe,Miscellaneous
Equivalent Grade:	A564,UNS S15500,AMS 5659,1.4545,X5CrNiCu15-5,XM 12
Condition of delivery:	Hot forging/hot rolling + annealing/normalizing + tempering/quenching + tempering
Surface condition	Scaled (hot working finished)/ground/rough machining/fine machining
Product Shape available:	Round,Flat,Square,Hexagon,Plate,Sheet,Other
Material origin From:	P. R, China.
Terms of price:	Ex works, CIF, CFR.
Certification For Exportation:	Invoice, Packing list, Bill of lading, and Origin of Certificate.
Min.order quantity per batch:	1000 KG
Output Per Year:	150000 Ton
UT test standards:	ASTM E2375 / SAE AMS 2154 / SEP 1923 / GB/T 4162 / EN 10228-3.
Meltling Process Route:	BEF + ESR / EAF + LF + VD + ESR
Standard Export Packing Way:	Wooden box, wooden tray with free from fumigation.
Production Lead Time:	Around 65 days after PO.

►GENERAL CHARACTERISTICS OF PH GRADES 15-5PH

►15-5PH Inventory Size Ranges

Plates / Sheets

Steel Bar

Coil / Stri

**0.08-200mm(T)WL**

**Φ8-1200mm*L**

0.03-16.0xLmm

Get a quote

Get a quote

Get a quote

APPLICATIONS

FAFORGING

HEAT TREATMENT

SOLUTION TREATMENT

AGE/PRECIPITATION HARDENING

MACHINABILITY

WELDABILITY

►15-5PH Steel Chemical Composition

Please contact us for more details. The technical data provided is for information only and not for design purposes.

►15-5PH Standard Heat Treatments

TABLE 1 – STANDARD HEAT TREATMENTS

TABLE 2 – TYPICAL MECHANICAL PROPERTIES

TABLE 3 - PROPERTIES ACCEPTABLE FOR MATERIAL SPECIFICATION*

TABLE 4 - SHEET CHARPY IMPACT RESISTANCE*

TABLE 5 - MODULUS OF ELASTICITY

TABLE 6 - EFFECT OF TEMPERATURE ON MODULUS OF ELASTICITY

TABLE 7 - PHYSICAL PROPERTIES

DIMENSIONAL CHANGE IN HARDENING

TABLE 8 – CONTRACTION FROM HEAT TREATMENT

TABLE 9 - CORROSION RATES IN VARIOUS MEDIA

TABLE 10 - STRESS CORROSION CRACKING TEST RESULTS OF PCSSC-LTD 15-5 PH*

TABLE 11 – 5% SALT FOG EXPOSURE FOR 10 DAYS

►GENERAL CHARACTERISTICS OF PH GRADES 15-5PH

►15-5PH Inventory Size Ranges

Plates / Sheets

Steel Bar

Coil / Stri

0.08-200mm(T)*W*L

Φ8-1200mm*L

0.03-16.0xLmm

Get a quote

Get a quote

Get a quote

APPLICATIONS

FAFORGING

HEAT TREATMENT

SOLUTION TREATMENT

AGE/PRECIPITATION HARDENING

MACHINABILITY

WELDABILITY

►15-5PH Steel Chemical Composition

Please contact us for more details. The technical data provided is for information only and not for design purposes.

►15-5PH Standard Heat Treatments

TABLE 1 – STANDARD HEAT TREATMENTS

TABLE 2 – TYPICAL MECHANICAL PROPERTIES

TABLE 3 - PROPERTIES ACCEPTABLE FOR MATERIAL SPECIFICATION*

TABLE 4 - SHEET CHARPY IMPACT RESISTANCE*

TABLE 5 - MODULUS OF ELASTICITY

TABLE 6 - EFFECT OF TEMPERATURE ON MODULUS OF ELASTICITY

TABLE 7 - PHYSICAL PROPERTIES

DIMENSIONAL CHANGE IN HARDENING

TABLE 8 – CONTRACTION FROM HEAT TREATMENT

TABLE 9 - CORROSION RATES IN VARIOUS MEDIA

TABLE 10 - STRESS CORROSION CRACKING TEST RESULTS OF PCSSC-LTD 15-5 PH*

TABLE 11 – 5% SALT FOG EXPOSURE FOR 10 DAYS

**0.08-200mm(T)WL**

**Φ8-1200mm*L**