17-4PH / 1.4542 / S17400  Precipitation Hardening Martensitic Stainless Steel 

Certified Standards 

EN/DIN 
1.4542 / X5CrNiCuNb16.4 
AFNOR 
Z6CNU17-O4 
ASTM-A564 
Grade 630 
UNS 
S17400 
JIS 
SUS630 
BRANDS® 
AL 17-4™ 
Custom 630™ 
Other 
SAE AMS 5643 
SAE AMS 5604 
NACE MR01-75 
ISO 15156 
PED 97/23/CE 
API 6A PSL4 (UT) 
ASTM A388 (UT) 
EN10088-3 
Cross Rolled, Solution Annealed Plate Hot Rolled, Solution Annealed, Descaled, Pickled to ASTM A693 and AMS 5604. Full Mill Certs supplied with all goods. 

17-4PH Stock Range: 

Rolled or Forged, Machined Round Bar in 3-8 metre lengths or cut to size. Full Mill Certs supplied with all goods. 
17-4PH (Condition A) 
17-4PH (H1150D) 
17-4PH (H1025) 
For more information on our 17-4PH product, to request a quote or to place an order, please contact our helpful sales team. 
 
dia. Metric 
 
dia. Imperial 
Cond. A 
Solution 
Annealed 
Cond. 
H1150D 
H1150+1150 
Cond. 
H1025 
(P1070) 
12.70mm 
0.500" 
✔ 
✔ 
 
15.88mm 
0.625" 
✔ 
✔ 
✔ 
19.05mm 
0.750" 
✔ 
✔ 
✔ 
22.00mm 
0.866" 
✔ 
✔ 
✔ 
22.23mm 
0.875" 
✔ 
✔ 
✔ 
25.40mm 
1.000" 
✔ 
✔ 
✔ 
28.58mm 
1.125" 
✔ 
✔ 
✔ 
31.75mm 
1.250" 
✔ 
✔ 
✔ 
34.93mm 
1.375" 
 
 
✔ 
35.00mm 
1.378" 
✔ 
✔ 
 
38.10mm 
1.500" 
✔ 
✔ 
 
40.00mm 
1.575" 
 
 
✔ 
41.28mm 
1.625" 
✔ 
✔ 
 
44.45mm 
1.750" 
✔ 
✔ 
✔ 
47.63mm 
1.875" 
✔ 
✔ 
 
50.80mm 
2.000" 
✔ 
✔ 
✔ 
53.98mm 
2.125" 
✔ 
✔ 
 
57.15mm 
2.250" 
✔ 
✔ 
✔ 
60.33mm 
2.375" 
✔ 
✔ 
 
63.50mm 
2.500" 
✔ 
✔ 
✔ 
69.85mm 
2.750" 
✔ 
✔ 
 
70.00mm 
2.756 
 
 
✔ 
76.20mm 
3.000" 
✔ 
✔ 
✔ 
80.00mm 
3.150" 
 
 
✔ 
82.55mm 
3.250" 
✔ 
✔ 
✔ 
88.90mm 
3.500" 
✔ 
✔ 
✔ 
95.25mm 
3.750" 
✔ 
✔ 
 
101.60mm 
4.000" 
✔ 
✔ 
✔ 
107.95mm 
4.250" 
✔ 
✔ 
 
114.30mm 
4.500" 
✔ 
✔ 
✔ 
120.65mm 
4.750" 
✔ 
✔ 
✔ 
127.00mm 
5.000" 
✔ 
✔ 
✔ 
133.33mm 
5.250" 
 
✔ 
 
139.70mm 
5.500" 
✔ 
✔ 
✔ 
146.05mm 
5.750" 
 
✔ 
 
152.40mm 
6.000" 
✔ 
✔ 
✔ 
165.10mm 
6.500" 
✔ 
✔ 
✔ 
175.00mm 
6.890" 
 
✔ 
 
177.80mm 
7.000" 
✔ 
✔ 
✔ 
190.50mm 
7.500" 
✔ 
✔ 
✔ 
203.20mm 
8.000" 
✔ 
✔ 
✔ 
215.90mm 
8.500" 
✔ 
✔ 
 
228.60mm 
9.000" 
✔ 
✔ 
✔ 
241.30mm 
9.500" 
✔ 
✔ 
 
254.00mm 
10.000" 
✔ 
✔ 
✔ 
266.70mm 
10.500" 
✔ 
✔ 
 
279.40mm 
11.000" 
✔ 
✔ 
✔ 
292.10mm 
11.500" 
 
✔ 
 
304.80mm 
12.000" 
✔ 
✔ 
✔ 
330.20mm 
13.000" 
 
✔ 
 
355.60mm 
14.000" 
 
✔ 
 
360.00mm 
14.173" 
✔ 
 
 
374.65mm 
14.750" 
 
✔ 
 
381.00mm 
15.000" 
 
✔ 
 
406.40mm 
16.000" 
 
✔ 
 
410.00mm 
16.142" 
✔ 
✔ 
 
457.20mm 
18.000" 
 
✔ 
 
460.00mm 
18.110" 
✔ 
 
 
510.00mm 
20.079" 
 
✔ 
 
Note: Non stock items are available ex-mill, in short lead times. Please contact us with your enquiry. 
 
 
17-4PH (H1150D) 
 
 
dia. Metric 
 
dia. Imperial 
 
Tol. 
12.70mm 
0.500" 
15.88mm 
0.625" 
19.05mm 
0.750" 
22.23mm 
0.875" 
25.40mm 
1.000" 
0.1 
28.58mm 
1.125" 
0.1 
31.75mm 
1.250" 
0.1 
35.00mm 
1.378" 
0.1 
38.10mm 
1.500" 
0.1 
41.28mm 
1.625" 
0.1 
44.45mm 
1.750" 
0.1 
47.63mm 
1.875" 
0.1 
50.80mm 
2.000" 
0.1 
53.98mm 
2.125" 
0.1 
57.15mm 
2.250" 
0.1 
60.33mm 
2.375" 
0.2 
63.50mm 
2.500" 
0.2 
69.85mm 
2.750" 
0.2 
76.20mm 
3.000" 
0.2 
82.55mm 
3.250" 
0.2 
88.90mm 
3.500" 
0.2 
95.25mm 
3.750" 
0.2 
101.60mm 
4.000" 
0.2 
107.95mm 
4.250" 
0.2 
114.30mm 
4.500" 
0.2 
120.65mm 
4.750" 
0.2 
127.00mm 
5.000" 
1.0 
133.33mm 
5.250" 
1.0 
139.70mm 
5.500" 
1.0 
146.05mm 
5.750" 
1.0 
152.40mm 
6.000" 
1.0 
165.10mm 
6.500" 
1.0 
177.80mm 
7.000" 
1.0 
190.50mm 
7.500" 
1.0 
203.20mm 
8.000" 
1.0 
215.90mm 
8.500" 
1.0 
228.60mm 
9.000" 
1.0 
241.30mm 
9.500" 
1.0 
254.00mm 
10.000" 
1.0 
266.70mm 
10.500" 
1.0 
279.40mm 
11.000" 
2.0 
292.10mm 
11.500" 
2.0 
304.80mm 
12.000" 
2.0 
330.20mm 
13.000" 
2.0 
355.60mm 
14.000" 
2.0 
381.00mm 
15.000" 
2.0 
410.00mm 
16.140" 
2.0 
457.20mm 
18.000" 
2.0 
480.00mm 
18.897" 
3.0 
510.00mm 
20.080" 
3.0 
560.00mm 
22.047" 
4.0 
610.00mm 
24.016" 
4.0 
660.00mm 
25.984" 
4.0 
710.00mm 
27.953" 
4.0 
Note: Non stock items are available ex-mill, in short lead times. Please contact us with your enquiry. 
 
 
17-4PH (Condition A) 
 
 
dia. Metric 
 
dia. Imperial 
 
Tol. 
12.70mm 
0.500" 
15.88mm 
0.625" 
19.05mm 
0.750" 
22.23mm 
0.875" 
25.40mm 
1.000" 
0.1 
28.58mm 
1.125" 
0.1 
31.75mm 
1.250" 
0.1 
35.00mm 
1.378" 
0.1 
38.10mm 
1.500" 
0.1 
41.28mm 
1.625" 
0.1 
44.45mm 
1.750" 
0.1 
47.63mm 
1.875" 
0.1 
50.80mm 
2.000" 
0.1 
53.98mm 
2.125" 
0.1 
57.15mm 
2.250" 
0.1 
60.33mm 
2.375" 
0.2 
63.50mm 
2.500" 
0.2 
69.85mm 
2.750" 
0.2 
76.20mm 
3.000" 
0.2 
82.55mm 
3.250" 
0.2 
88.90mm 
3.500" 
0.2 
95.25mm 
3.750" 
0.2 
101.60mm 
4.000" 
0.2 
107.95mm 
4.250" 
0.2 
114.30mm 
4.500" 
0.2 
120.65mm 
4.750" 
0.2 
127.00mm 
5.000" 
1.0 
133.33mm 
5.250" 
1.0 
139.70mm 
5.500" 
1.0 
152.40mm 
6.000" 
1.0 
165.10mm 
6.500" 
1.0 
177.80mm 
7.000" 
1.0 
190.50mm 
7.500" 
1.0 
203.20mm 
8.000" 
1.0 
215.90mm 
8.500" 
1.0 
228.60mm 
9.000" 
1.0 
241.30mm 
9.500" 
1.0 
254.00mm 
10.000" 
1.0 
266.70mm 
10.500" 
1.0 
279.40mm 
11.000" 
2.0 
304.80mm 
12.000" 
2.0 
360.00mm 
14.173" 
2.0 
410.00mm 
16.142" 
2.0 
460.00mm 
18.110" 
2.0 
Note: Non stock items are available ex-mill, in short lead times. Please contact us with your enquiry. 
 
 
17-4PH (H1025) 
 
 
dia. Metric 
 
dia. Imperial 
 
Tol. 
12.70mm 
0.500" 
15.88mm 
0.625" 
0.1 
19.05mm 
0.750" 
0.1 
22.00mm 
0.866" 
0.1 
22.22mm 
0.875" 
0.1 
25.40mm 
1.000" 
0.1 
28.57mm 
1.125" 
0.1 
31.75mm 
1.250" 
0.1 
35.00mm 
1.378" 
0.1 
40.00mm 
1.575" 
0.1 
44.45mm 
1.750" 
0.1 
50.80mm 
2.000" 
0.1 
57.15mm 
2.250" 
0.1 
63.50mm 
2.500" 
0.2 
70.00mm 
2.756" 
0.2 
76.20mm 
3.000" 
0.2 
80.00mm 
3.150" 
0.2 
82.55mm 
3.250" 
0.2 
88.90mm 
3.500" 
0.2 
101.60mm 
4.000" 
0.2 
114.30mm 
4.500" 
0.2 
120.65mm 
4.750" 
0.2 
127.00mm 
5.000" 
1.0 
139.70mm 
5.500" 
1.0 
152.40mm 
6.000" 
1.0 
165.10mm 
6.500" 
1.0 
177.80mm 
7.000" 
1.0 
190.50mm 
7.500" 
1.0 
203.20mm 
8.000" 
1.0 
228.60mm 
9.000" 
1.0 
254.00mm 
10.000" 
1.0 
279.40mm 
11.000" 
2.0 
304.80mm 
12.000" 
2.0 
Intoco 17-4PH Bar Tolerance Chart 

Detailed Description 

Intoco, a UK based manufacturing company, specialise in 'no-compromise' manufacture using state of the art CNC equipment, and the finest steels available. Intoco are also a very large UK and European stock-holder of hot work tool steels, stainless steels (440c / 1.4125 / 4125 / X105CrMo17 and F51 / 1.4462 / X2CrNiMoN22 Duplex) and now 17-4PH / 17/4PH / Euronorm 1.4542 / 1.4548 / Type AISI Type 630 ASTM A693 / A564 grade 630 / AMS 5604B / AFNOR Z6CNU17-04 / Din EN X5CrNiCuNb16.4 / JIS SUS630 stainless steel (Acier, inoxydable, Rostfreier, Stahl, Acciaio, Inossidabile, Aco, Inoxidável, Acero, Inox, Inoxidables, Rostfrei, Roestvrij) in round bar form. 
The 17-4 PH / 1.4542 grade of stainless (Acier, inoxydable, Rostfreier, Stahl, Acciaio, Inossidabile, Aco, Inoxidável, Acero, Inox, Inoxidables, Rostfrei, Roestvrij) combines high strength, hardness (upto 300 degrees C) and corrosion resistance. The mechanical properties can be optimized with heat treatment. 17/4 PH should not be used at temperatures above 300 degrees C / 572 degs. F, or at very low temperatures. It has adequate resistance to atmospheric corrosion, or in diluted acids or salts where it's corrosion resistance is equal to stainless grade 304 or 430 in most media, including some industries in chemical, petroleum, paper, dairy and food processing. Alloy 17-4PH / 1.4542 withstands corrosive attacks better than any of the standard hardenable stainless steels. 
17-4PH is stocked by Intoco in condition A / Con.A / Cond.A / solution annealed and H1150 + 1150 precipitation double aged age hardened, bright machined quality bar. The double aged H1150 + 1150 is hardened in accordance with NACE MR-0175 or ASTM A564 condition H1150D, this is twice aged for 4 hours @ 620 degrees centigrade / 620°C (or 1150 degrees F / 1150°F). H1150D is the more common standard of supply. H1150M (which is age hardened 2 hrs @ 760 degrees C + 4 hours @ 620°C) gives better impact properties with slightly less strength (yield strength 115 KSI compared to 125 ksi). The second aging on H1150+1150 is used to bring down the hardness values. It was found that resistance to sulfid stress-cracking is given at a maximum hardness of 33 HRC. Technically there are two processes taking place at aging: copper precipitation and formation of reversion martensite. After the first aging, the microstructure is made of hardened martensite with a depleted Cu (copper) content, reversion austenite and some amount of ferrite and primary, i.e. original retained austenite. During the second aging, hardening will not resume, but additional reversion austenite can form, thus increasing toughness. 
17-4PH / 17/4PH / Euronorm 1.4542 / 1.4548 / Type AISI Type 630 ASTM A693 grade 630 / AMS 5604B / AFNOR Z6CNU17-04 / Din EN X5CrNiCuNb16.4 / JIS SUS630 stainless steel (Acier, inoxydable, Rostfreier, Stahl, Acciaio, Inossidabile, Aco, Inoxidável, Acero, Inox, Inoxidables, Rostfrei, Roestvrij) can be used for pump shafts, propeller shafts, gear wheels, bearings, bolts, spindles, foils, deck platforms, turbine blades, mechanical components, nuclear waste casks, valve internal components, pulp & paper industry products, temperture sensor products, etc. It can also be manufactured to aircraft standard AMS 5643 / 5622 (MSRR 6601) vacuum arc remelt (VAR) which gives the grade good transverse properties as well as being corrosion resistant and having medium to high strengths in the appropriate aged condition. Mechanical properties are defined by the appropriate temperature for the relevant H condition (h900 / h1000 / h1025 / h1050 / h1100 / h1150 / h1150+1150 / h1150M - Hxxx condition = aged at xxx degrees F). The 17-4PH / 17/4PH / Euronorm 1.4542 / 1.4548 / Type AISI Type 630 ASTM A693 grade 630 / AMS 5604B / AFNOR Z6CNU17-04 / Din EN X5CrNiCuNb16.4 / JIS SUS630 stainless steel material is NACE MR0175 approved. 
The above text is given as an overview of Precipitation Hardening Martensitic Stainless Steel, and is not to be relied upon for a specification. 

WANT MORE INFORMATION? 

For more information on our 17-4PH product, to request a quote or to place an order, please contact our helpful sales team. 
Our site uses cookies. For more information, see our cookie policy. Accept cookies and close
Reject cookies Manage settings